Protected cultivation · Our most popular structure
Naturally ventilated polyhouse (NVPH)
Protects your crop from rain, heat, wind and insects without fans or cooling pads. Designed, made in our own factory and built on your land by Kryzen.
350+farms built by Kryzen across India
120 km/h wind design
Designed for strong winds and a 25 kg/m² load, then checked for your site.
2 mm GI steel
In every member, not just the columns, on 76 mm columns and deep concrete foundations.
Built in 45–90 days
From the day material reaches your land to a working polyhouse.
What is an NVPH?
A polyhouse that cools itself with natural air flow
Quick answer
A naturally ventilated polyhouse is a steel structure covered with UV-stabilised film. Roof vents and side curtains move hot air out and fresh air in. It costs less to build and run than a fan and pad polyhouse, and suits capsicum, cucumber, tomato and flowers in most Indian climates.
Kryzen builds every NVPH in a butterfly design. The roof opens at the top like a butterfly’s wings, giving each bay a large fixed vent that lets heat out all day without motors.
How each part controls the climate
01Roof vent
Hot air rises and leaves through the open ridge at the top of every bay.
02Side curtains
Roll them up on hot days. Roll them down on cold nights or in heavy rain.
03Insect net
A 40-mesh net sits behind every curtain and vent. Air passes through. Most insects do not.
04Shade net
A 50% shade net inside cuts strong summer sun. Pull it open or closed by hand.
05Foggers
Add-on. A fine mist raises humidity and lowers heat on dry, hot days.
06Aluminet
Add-on. A retractable screen reflects heat and can keep the inside about 5 °C cooler.
Why build one
Advantages of an NVPH
The reason it is the structure most of our farmers choose.
Lower cost
No large fans or cooling pads to buy, run or repair.
Low electricity
Ventilation is natural. Power is needed mainly for irrigation and optional foggers.
Year-round crops
Rain, hail and strong sun no longer decide when you can grow.
Less spraying
Insect net on every opening keeps most pests out.
Better yield and price
Plants grow evenly and give clean, uniform produce that sells better.
Less water
Drip irrigation sends water only to the roots.
Subsidy eligible
Built to NHB and NHM norms, so your project can apply for government support.
Climate-proof agriculture
Heavy rain, hail, heatwaves and cold nights stay outside. Your crop grows in steady conditions, whatever the season brings.
What’s inside
Built part by part to last 15 years
A polyhouse is only as strong as its weakest part. Here is what goes into every Kryzen NVPH.
GI steel frame
2 mm wall in every member. 76 mm columns on 60 mm pipe foundations, 75 cm or deeper in 1:2:4 concrete.
UV-stabilised roof film
200 micron, 5-layer film in four types (white diffused, clear, yellow and blue), so you can match the light to your crop.
Film fixing
Aluminium or GI profile with zigzag spring wire holds the film tight along every edge.
Curtains and insect net
Roll-up side curtains 2.5–3.0 m high, with 40-mesh UV insect net behind them.
Shade net and aluminet
50% shade net across the whole floor, opened and closed by hand. Retractable aluminet as an add-on.
Gutters and rainwater
Gutters slope about 2% and connect to rainwater harvesting, so the roof fills your tank.
Ante-room entrance
A double-door ante-room stops insects getting in when your team walks in and out.
Wind and load design
Designed for 120 km/h wind and a 25 kg/m² load. Final design is checked for your site.
Polyfilm types
Choose the right film for your crop
Every Kryzen NVPH is covered with 200 micron, 5-layer, UV-stabilised film. Pick the type that gives your crop the light it needs. Our team will recommend one for your crop and region.
Widely used · RecommendedWhite Diffused
White diffused polyfilm
200-micron, 5-layer greenhouse film combining light diffusion, anti-drip and anti-dust properties. Distributes incoming sunlight more evenly across the crop canopy, supporting uniform light exposure for capsicum, cucumber, gerbera and other horticultural crops.
Light transmission87%Light diffusion62%UV life3 yrs*- Best for
- Capsicum, gerbera, carnation, cucumber (not for roses)
- Best region
- Across India
Full technical specs
Film usage Greenhouse cover Manufacturing technology 5-layer Thickness 200 micron UV stabilised Yes Light transmission 87% Light diffusion 62% UV life 3 years* Anti-drip Yes Anti-dust Yes Available width 4.5 m, 5.5 m, 7 m and 9 m Available length 600–900 m jumbo roll, or cut to size Area recommended Across India Crops recommended Capsicum, gerbera, carnation, cucumber (not for roses) Delivery time Immediate 
Clear
Driplock Clear
200-micron, 5-layer UV-stabilised greenhouse film with 90% light transmission and anti-drip properties. Designed to make the most of available sunlight in cool climates and low-light regions, for carnations, nursery plants and protected horticultural crops.
Light transmission90%Light diffusion25%UV life3 yrs*- Best for
- Carnation, nursery stock (not for roses)
- Best region
- Hilly regions with low winter light
Full technical specs
Manufacturing technology 5-layer Thickness 200 micron UV stabilised Yes Light transmission 90% Light diffusion 25% UV life 3 years* Anti-drip Yes Anti-dust Yes Available width 4.5 m, 5.5 m, 7 m and 9 m Available length 600–900 m jumbo roll, or cut to size Area recommended Hilly regions with low winter light Crops recommended Carnation, nursery stock (not for roses) 
Diffused Yellow
Suncover 205N · Floriculture special
200-micron UV-stabilised greenhouse covering film with 88% light transmission and a light yellowish tint. Gives crops a high level of sunlight with a durable protective cover, and suits flowers including roses.
Light transmission88%Light diffusion60%UV life3 yrs*- Best for
- All crops, including roses (not bicolour roses)
- Best region
- Across India
Full technical specs
Film usage Greenhouse cover Manufacturing technology 5-layer Thickness 200 micron UV stabilised Yes Light transmission 88% Light diffusion 60% UV life 3 years* UV blocking Yes Anti-sulphur Yes Anti-dust Yes Available width 4.5 m, 5.5 m, 7 m and 9 m Available length 600–900 m jumbo roll, or cut to size Area recommended Across India Crops recommended All crops, including roses (not bicolour roses) 
Diffused Blue
Driplock Diffused Blue
200-micron UV-stabilised greenhouse film with 77% light transmission, light diffusion and anti-drip protection. Spreads sunlight across the crop canopy and manages condensation in nurseries, leafy vegetables, horticulture and floriculture.
Light transmission77%Light diffusion60%UV life3 yrs*- Best for
- Tomato, bell pepper, cucumber, strawberry, roses, lettuce, broccoli, chrysanthemum
- Best region
- Across India
Full technical specs
Film usage Greenhouse cover Manufacturing technology 5-layer Thickness 200 micron UV stabilised Yes Light transmission 77% Light diffusion 60% UV life 3 years* UV blocking Yes Anti-sulphur Yes Anti-drip Yes Anti-dust Yes Thermic Yes Available width 4.5 m, 5.5 m, 7 m and 9 m Available length 600–900 m jumbo roll, or cut to size Area recommended Across India Crops recommended Tomato, bell pepper, cucumber, strawberry, roses, lettuce, broccoli, chrysanthemum and more Delivery time Immediate
Compare all four films
| White Diffused | Clear | Diffused Yellow | Diffused Blue | |
|---|---|---|---|---|
| Light transmission | 87% | 90% | 88% | 77% |
| Light diffusion | 62% | 25% | 60% | 60% |
| Anti-drip | Yes | Yes | – | Yes |
| Anti-dust | Yes | Yes | Yes | Yes |
| Anti-sulphur | – | – | Yes | Yes |
| UV blocking | – | – | Yes | Yes |
| Thermic | – | – | – | Yes |
| Best region | Across India | Hilly regions with low winter light | Across India | Across India |
| Best for | Capsicum, gerbera, carnation, cucumber (not for roses) | Carnation, nursery stock (not for roses) | All crops, including roses (not bicolour roses) | Tomato, bell pepper, cucumber, strawberry, roses, lettuce, broccoli, chrysanthemum |
All films: 5-layer, 200 micron, UV-stabilised. Widths 4.5 m, 5.5 m, 7 m and 9 m. Length 600–900 m jumbo roll, or cut to size. *UV life of about 3 years; actual life depends on sunlight, sprays and site conditions.
Technical details
NVPH specifications
Every value goes in writing in your quotation.
Final design depends on your site’s wind, soil and climate. We confirm every value after a site inspection.
| Specification | Kryzen NVPH |
|---|---|
| Design | Butterfly design with open ridge vent |
| Bay size | 8 m × 4 m |
| Ridge height | 6.8 m to 7.5 m, as your crop and site need |
| Gutter height | 4.2 m on one side, 4.5 m on the other |
| Gutter slope | About 2% |
| Wind and load design | 120 km/h wind, 25 kg/m² load |
| Steel | Galvanised iron (GI), 2 mm wall in all members |
| Galvanisation | 375–400 GSM |
| Columns | 76 mm outer diameter |
| Trusses | 60 mm top and bottom chords; 48 mm and 42 mm members |
| Purlins | 33 mm and 25 mm |
| Foundation | 60 mm GI pipe, 75 cm or deeper, in 1:2:4 concrete |
| Roof film | 200 micron, 5-layer, UV-stabilised; white diffused, clear, diffused yellow or diffused blue (see polyfilm types) |
| Light transmission | 77–90%, depending on the film type |
| Film fixing | Aluminium or GI profile with zigzag spring wire |
| Side curtains | Roll-up 200 micron film, 2.5–3.0 m high |
| Insect net | 40 mesh, UV-stabilised |
| Shade net | 50%, manual open and close, same size as the floor area |
| Vent openers | Geared, auto-locking |
| Entrance | Ante-room with double door |
| Rainwater | Gutters connected for rainwater harvesting |
Made by Kryzen
Our own factory. Our own build team.
We cut, shape and quality-test the steel at our factory in Satara, Maharashtra, and our own construction team builds it on your land. You can follow every step live on your client portal at alpha.kryzen.com.
What to grow
Best crops for an NVPH
High-value vegetables and flowers that pay back the investment. Plan two crops a year: a quick summer crop, then a long winter crop.
Summer crop
April to July
A quick cucumber crop of about 90 days. Open the vents and pull the shade net to keep the polyhouse cool.
Winter crop
August to February
The film keeps out rain and cold, so long-season crops like red and yellow capsicum and tomato keep picking all winter.
Flowers such as rose, gerbera and carnation grow all year in an NVPH.
All crops for an NVPH
Go soil-less
You can also grow soil-less inside an NVPH
Add a hydroponic system inside the same structure. No soil-borne disease, exact nutrition for every plant, and higher yield from the same area. We design and install the system with your polyhouse.
Cocopeat grow bags
Capsicum, cucumber and tomato in washed cocopeat, fed by drip.
NFT flatbed
Lettuce, leafy greens and herbs in food-grade channels.
Dutch bucket
Vine crops in buckets that recirculate the nutrient solution.
Trough
Strawberry and leafy crops in raised troughs at working height.
Every soil-less farm comes with our nutrient calculator and agronomy wiki.
Cost and profit in 1 acre NVPH
What an NVPH costs to build and run
1 acre is 4,047 m². Rates from a 2026 Kryzen quotation for a soil-based NVPH, with GST and the estimated subsidy shown separately. Larger farms usually cost less per m², so ask us for a quotation for your size.
| Item | 1 acre | 2 acres | 3 acres |
|---|---|---|---|
| Covered area | 4,047 m² | 8,094 m² | 12,141 m² |
| NVPH structure (₹780/m²) | ₹31.6 lakh | ₹63.1 lakh | ₹94.7 lakh |
| Engineering, erection and commissioning (₹181/m²) | ₹7.3 lakh | ₹14.7 lakh | ₹22.0 lakh |
| Foggers, aluminet, fans, drip and panels | ₹14.6 lakh | ₹29.1 lakh | ₹43.7 lakh |
| Project price (before GST) | ₹53.5 lakh | ₹1.07 crore | ₹1.60 crore |
| GST (18%) | ₹9.6 lakh | ₹19.2 lakh | ₹28.9 lakh |
| Total invoice value | ₹63.1 lakh | ₹1.26 crore | ₹1.89 crore |
| Estimated NHM/MIDH subsidy (2,500 m² limit) | − ₹12.5 lakh | − ₹12.5 lakh | − ₹12.5 lakh |
| Cost after subsidy | ₹50.6 lakh | ₹1.14 crore | ₹1.77 crore |
Monthly running cost, per acre
About ₹47,500
- Labour (2 full-time workers × ₹12,000)₹24,000
- Seedlings₹8,000
- Fertiliser and crop protection₹8,000
- Electricity (irrigation and fans)₹4,500
- Packaging₹3,000
Expected revenue, capsicum
₹2.4–8 lakh/monthly
Per acre in an NVPH. It depends on variety, season, market price and how well the crop is managed.
Subsidy has an area limit
- NHM / MIDH: the government pays 50% of the NVPH cost norm (₹1,000 to ₹1,200 per m², depending on size), but only on up to 2,500 m² per farmer. That is about 0.6 acre, so the most you can get is about ₹12.5 lakh, even if your polyhouse is bigger.
- NHB: projects bigger than 2,500 m² can apply for a credit-linked subsidy of 50% of the eligible project cost, up to ₹100 lakh per project. A bank loan is part of the project.
Cash flow and break-even over 12 years
Cumulative cash position of a 1-acre NVPH, with and without the NHM/MIDH subsidy. Pick a crop below, then move the sliders to see how capacity use and your loan change it.
- With subsidy
- Without subsidy
- Before break-even
- After break-even
Crops suitable for NVPH: pick one to set the revenue range
These are tentative numbers.
Want to know your own calculations? Book the site inspection kit and our team of experts will find out your break-even period.
Illustration only, not a guarantee. Based on the 1-acre project price plus 18% GST, an NHM/MIDH subsidy of ₹12.5 lakh (50% of ₹1,000/m² on up to 2,500 m²) received after year 1, subject to approval, revenue for the crop you pick per acre per month, scaled from the low end of its range at 50% capacity use to the high end at 95%, running cost of about ₹47,500 per acre a month in year 1 rising by the opex increase you select each year, crop rates rising by the crop rate increase you select each year, and a polyfilm change of ₹2.5 lakh per acre every 3 years. Year 1 counts 9 months of sales. Crop revenue ranges are Kryzen estimates per acre per month. Tax free: agricultural income is generally exempt from income tax in India under Section 10(1); check your case with a tax adviser.
What you earn depends on your crop
Income changes with the crop, season and market. Before you build, our team prepares a crop-wise projection for your land in your project report, using current market prices from Price Watcher. After harvest, Buyers Connect helps you sell.
Included free
- 6 months of virtual agronomy
- 4-day training for your farm team
- Hydroponic Masterclass logins
- Farm management software
- Buyers Connect
Worth ₹1.08 lakh
Compare
NVPH vs open-field farming
The same crop, two ways to grow it. An open field costs nothing to cover, but the weather decides your harvest.
| Point | Open field | NVPH polyhouse |
|---|---|---|
| Rain, hail and strong sun | Crop can be damaged or lost | Crop is protected |
| Pests | High, with more spraying | Lower: insect net keeps most out |
| Growing season | Only in the right season | Year-round |
| Water use | Flood or sprinkler | Drip, only at the roots |
| Produce quality | Uneven | Uniform, cleaner, better price |
| Upfront cost | Low | About ₹53.5 lakh per acre before GST |
NVPH vs nethouse
NVPH or nethouse?
Both grow profitable crops. A nethouse costs less; an NVPH protects your crop from rain and cold, so you can grow higher-value crops for more of the year.
| Point | NVPH | Nethouse |
|---|---|---|
| Covering | UV film roof, roll-up curtains and insect net | Shade net roof and insect net sides |
| Rain and cold | Protected | Partly protected |
| Temperature | Vents, curtains and shade net control it | Cooler; air moves through the net |
| Electricity | Low: mainly irrigation | Least |
| Build cost | Medium | Lowest |
| Best for | Coloured capsicum, cucumber, tomato, flowers | Cucumber, green capsicum, tomato, leafy greens, nursery |
NVPH vs fan and pad
NVPH or fan and pad polyhouse?
A fan and pad polyhouse cools itself with exhaust fans and wet pads. It costs more to build and run, but suits high-value flowers and hot, dry regions.
| Point | NVPH | Fan and pad polyhouse |
|---|---|---|
| Covering | UV film roof, roll-up curtains and insect net | Closed film house with exhaust fans and wet cooling pads |
| Temperature control | Natural airflow through vents and curtains | Active cooling with fans and pads |
| Rain and cold | Protected | Fully protected |
| Electricity | Low: mainly irrigation | Highest: fans and pumps |
| Build cost | Medium | Highest |
| Best for | Coloured capsicum, cucumber, tomato, flowers | Roses, gerbera, orchids, exotics, hot dry regions |
Compare before you sign
8 questions to ask any polyhouse builder
A polyhouse is a 15-year investment. Compare the steel, film and support, not just the price per square metre.
- 1
Steel thickness
Ask for the wall thickness of every member, not just the columns.
Kryzen: 2 mm in all members
- 2
Galvanisation
GSM decides how long the steel resists rust.
Kryzen: 375–400 GSM
- 3
Height and vents
Taller houses with bigger vents stay cooler.
Kryzen: 6.8–7.5 m ridge, open ridge vent, 2.5–3.0 m curtains
- 4
Film
Ask for thickness, UV grade, anti-drip and the standard it meets.
Kryzen: 200 micron, 5-layer, in 4 types for different crops
- 5
Wind design
Ask what wind speed the design is checked for.
Kryzen: 120 km/h, 25 kg/m² load
- 6
Warranty
Get the years for structure, film and nets in writing.
Kryzen: 15 years structure, 2.5 years film, 3 years nets
- 7
Scope
Who pays for civil work, transport and the subsidy file?
Kryzen: Listed line by line in your quotation
- 8
After handover
Does support end the day the house is built?
Kryzen: Training, 6 months of agronomy and farm software
Already have a team who can build?
Buy your NVPH material from us
No middlemen. No hidden costs. Just honest prices.
India’s first and only fully transparent material purchase for protected cultivation. The same material we use on our own projects, from our factory.
- 1Choose a system
- 2Set your dimensions
- 3Explore your materials
Subsidy on NVPH
Government subsidy for your NVPH
An NVPH can get assistance under the Mission for Integrated Development of Horticulture (MIDH), through your state's National Horticulture Mission (NHM), or under the National Horticulture Board (NHB) for larger projects.
NHM / MIDH subsidy
NHM state subsidy providerEnrolled with the National Horticulture Mission in Maharashtra and Karnataka for state horticulture schemes.
- Assistance rate50% of the cost normSubject to the government cost norm and approval.
- Tubular / rectangular NVPHCost norm ₹1,000–1,200/m²₹1,200 up to 500 m², ₹1,050 up to 1,008 m², ₹1,000 up to 2,500 m². At 50%, about ₹12.5 lakh for 2,500 m².
- Area limitUp to 2,500 m² per farmerAbout 0.6 acre. A bigger polyhouse still gets subsidy on 2,500 m² only.
- Design eligibilityApproved category sets the rateWe confirm the classification of your design before you apply.
NHB subsidy
NHB subsidy providerKryzen is a registered National Horticulture Board subsidy provider for all states.
- Project sizeAbove 2,500 m² of covered areaFor bigger farms that go past the NHM / MIDH limit.
- Assistance rate50% of eligible project costCredit-linked, so a bank loan is part of the project. Up to ₹100 lakh per project.
Subsidy has an area limit
- NHM / MIDH: the government pays 50% of the NVPH cost norm (₹1,000 to ₹1,200 per m², depending on size), but only on up to 2,500 m² per farmer. That is about 0.6 acre, so the most you can get is about ₹12.5 lakh, even if your polyhouse is bigger.
- NHB: projects bigger than 2,500 m² can apply for a credit-linked subsidy of 50% of the eligible project cost, up to ₹100 lakh per project. A bank loan is part of the project.
Subsidy figures are indicative. The final amount depends on the approved design, covered area, eligible cost, location and applicable scheme rules.
How we build
From first call to first harvest
Ten steps, one team. Most projects are built in 45 to 90 days after material reaches the site.
1Free online consultation
We discuss your land, water, budget and goals on a video or phone call.
2Site inspection
Our team checks level, slope, sunlight, soil, water, power and road access.
3Design and quotation
We design for your climate and crops, and share a detailed quotation.
4Project report and finance
We prepare the DPR for your bank loan and subsidy file.
5Subsidy and loan
We help you apply for NHB or NHM subsidy and your bank loan, with the documents each office needs.
6Manufacturing
We cut, shape and quality-test the material at our factory in Satara.
7Construction
Our team builds the foundations, structure and growing systems on your land.
8Testing and handover
We test every system and hand over a working farm.
9Training and agronomy
Hands-on training for your team and 6 months of virtual agronomy support.
10Harvest management
We help you plan harvests, grading and sales, with market prices from Price Watcher and buyers through Buyers Connect.
FAQ
Questions about NVPH polyhouses
Not sure which structure suits your land? Call us on +91-9870424425.
What is the cost of a 1 acre NVPH polyhouse?
A 1-acre Kryzen NVPH structure with engineering and erection costs about ₹37–57 lakh before GST, or about ₹44–67 lakh with 18% GST. Add-ons like foggers, aluminet and fans cost extra. The final price depends on size and site.
How long does it take to build an NVPH?
Kryzen builds an NVPH in 45 to 90 days after material reaches your site, depending on farm size and how ready the site is.
How long does an NVPH last?
The GI steel structure carries a 15-year warranty. The roof film is replaced every few years; it carries a 2.5-year warranty.
Which crops grow best in an NVPH?
Coloured capsicum, cucumber, tomato, gerbera, rose, carnation and chrysanthemum grow well in an NVPH in most Indian climates.
What is the difference between an NVPH and a fan and pad polyhouse?
An NVPH cools with natural air flow through roof vents and side curtains. A fan and pad polyhouse uses exhaust fans and wet cooling pads. Fan and pad gives tighter control but costs more to build and run.
Can I get a subsidy for an NVPH?
Yes. Under NHM/MIDH, an NVPH gets 50% of the cost norm (₹1,000–1,200/m²) on up to 2,500 m² per farmer, so about ₹12.5 lakh at most. Projects above 2,500 m² can apply to NHB for a 50% credit-linked subsidy, up to ₹100 lakh. Kryzen is an NHB subsidy provider for all states and an NHM state subsidy provider in Maharashtra and Karnataka, and we prepare the DPR for your bank and subsidy file.
Can I grow soil-less crops in an NVPH?
Yes. You can install cocopeat grow bags, NFT channels or Dutch buckets inside an NVPH.
Which polyfilm should I choose for my NVPH?
For most crops across India, white diffused film is the usual choice: it spreads light evenly over capsicum, cucumber, gerbera and carnation. Clear film lets in the most light (90%) for hilly, low-light regions. Diffused yellow suits flowers including roses. Diffused blue is anti-drip and thermic, for tomato, bell pepper, strawberry, roses and leafy crops.
Which polyfilm is best for roses?
Diffused yellow (Suncover 205N) suits all crops including roses, except bicolour roses. Diffused blue is also recommended for roses. White diffused and clear films are not recommended for roses.
How long does the polyfilm last?
All four film types are 200 micron, 5-layer and UV-stabilised, with a UV life of about 3 years. Actual life depends on sunlight, sprays and site conditions.
How do I pay?
Usually 10% advance with the order, and the balance before material is dispatched. The exact schedule is in your quotation.
Talk to our team
Plan your NVPH with us
Tell us about your land, water and budget. We’ll suggest the right size, crops and add-ons on a free online consultation, then share a detailed quotation.