Grower Plus Series High Tunnels
Contact us for pricing.
These NRCS approved high tunnels are a great way for you to get up and growing as fast as possible. Made from the same commercial grade components as all of our other structures these high tunnels are fast and easy to build. With industry leading strength and components matched with excellent customer support, your high tunnel build has never been easier. Our plus model features many design upgrades intended to keep you long term maintenance cost down while creating an ideal growing environment for all your plants.
Select options below to get an idea on pricing or contact us for a quote.
"CT Greenhouse was an outstanding company to work with! They walked me through each step as it was my first time purchasing a high tunnel. I purchased a 30X48 high tunnel with a double inflated layer. This will be the third season with the tunnel and still looks brand new. The directions were very easy to follow and if there were any questions they were just a phone call away. I highly recommend CT Greenhouse and would purchase from them again!"
- Brian Callahan, Uncle B's Farm
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Description
PLEASE CALL US TODAY AT 860-341-8707 FOR A CUSTOM QUOTE
Grower Plus High Tunnel Kits come with all the hardware needed for installation and a double inflated layer of 6-mil greenhouse plastic. Baseboard lumber is not included. Kits include:
- 1.9" 13 gauge tubing for main bows
- Aluminum double wirelock hip board
- 1.315" 16 gauge for trusses, purlins and roll ups
- 5:1 gear crank roll up side operators
- Aluminum fabric clips for roll up sides
- Wind exclusion panels on and bug netting under roll up sides
- 1.75" 14 gauge square end wall framing
- End wall peak vents with automatic opener
- 4' x 7' double hinged doors on each end
- Single layer of 6-mil 4 year greenhouse plastic
- Grade five bolts for all bolted connections
- Extra sharp stainless steel self tapping tek screws for non-predrilled connections
The Grower Plus Series is our mid-tier NRCS high tunnel kit, built for growers who want more than the basics without going all-in on the Pro. It's the same commercial-grade galvanized steel frame as every CT Greenhouse structure, but with key upgrades that make a real difference in day-to-day growing: double hinged doors on each end, automatic peak vents that regulate heat without you touching them, and wind exclusion panels with integrated bug netting under the roll-up sides. Every Plus kit meets USDA NRCS Conservation Practice Standard 325 (CPS 325), and CT Greenhouse structures have been approved in every state where they've been reviewed.
Available in widths from 14 to 30 feet, lengths from 48 to 148 feet, and your choice of standard (5') or tall (6') sidewalls. Select your options above to get an idea on pricing, or contact us for a custom quote.
The Grower Plus Series High Tunnel meets all requirements under USDA NRCS Conservation Practice Standard 325 for the Environmental Quality Incentives Program (EQIP). CT Greenhouse is an NRCS-approved vendor, and our structures have been approved in every state where they've been reviewed. Learn more about NRCS high tunnel funding.
Already have your NRCS grant? Call us at 860-341-8707 and we'll configure your tunnel to maximize your reimbursement.
What's Included in the Plus Kit
| ✓ | 1.9" 13-gauge galvanized steel main bows (commercial-grade frame built to handle wind and snow loads) |
| ✓ | Aluminum double wirelock hip board (secures your plastic film at the base of the bows for a tight, lasting seal) |
| ✓ | 1.315" 16-gauge tubing for trusses, purlins, and roll-up pipe (provides lateral strength and supports the roll-up side mechanism) |
| ✓ | 5:1 gear crank roll-up side operators (easy one-hand operation to open and close your sidewalls for ventilation) |
| ✓ | Wind exclusion panels + bug netting under roll-up sides (reduces pest entry and cold air infiltration at the side gaps, so you get airflow without the insects) |
| ✓ | End wall peak vents with automatic opener (temperature-activated vents that open on warm days and close when it cools, no electricity or manual adjustment needed) |
| ✓ | 4' x 7' double hinged doors on each end (wide clearance for wheelbarrows, carts, and equipment access from both ends) |
| ✓ | 1.75" 14-gauge square end wall framing (heavier-gauge square tubing for solid, plumb end walls) |
| ✓ | Double layer of 6-mil, 4-year greenhouse plastic (inflated double-layer for better insulation and reduced condensation drip) |
| ✓ | Aluminum fabric clips for roll-up sides |
| ✓ | Grade 5 bolts and stainless steel self-tapping tek screws (corrosion-resistant hardware throughout) |
Specifications
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Main bow tubing
1.9" round, 13-gauge galvanized steel
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Truss, purlin, and roll-up tubing
1.315" round, 16-gauge galvanized steel
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End wall framing
1.75" square, 14-gauge galvanized steel
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Covering
Double layer, 6-mil, 4-year greenhouse film
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Available widths
14', 16', 18', 20', 22', 24', 26', 28', 30'
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Available lengths
48', 72', 96', 148'
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Sidewall height
Standard (5') or Tall (6')
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NRCS compliance
USDA NRCS CPS 325 (High Tunnel System)
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Grower vs. Plus vs. Pro: Which Model Is Right for You?
All three models use the same commercial-grade galvanized steel frame and meet NRCS Practice 325 requirements. The difference is in the features that come standard with each tier.
| Feature | Grower | Plus ★ | Pro |
|---|---|---|---|
| NRCS CPS 325 | ✓ | ✓ | ✓ |
| Plastic covering | Single layer | Double layer | Double layer |
| Doors | Single each end | Hinged (both ends) | Sliding (both ends) |
| Peak vents + auto opener | – | ✓ | ✓ |
| Bug netting | – | ✓ | ✓ |
| Roll-up sides | 4-yr poly | 4-yr poly | 7-yr woven |
| Baseboards | Lumber (not incl.) | Lumber (not incl.) | Steel/poly (incl.) |
| End walls | Poly film | Poly film | Polycarbonate |
| Trellis cables | – | – | ✓ |
Scroll to see all models →
Looking for the entry-level model? Check out the Grower Series. Want everything fully upgraded? See the Pro Series.
Why the Plus?
Automatic peak vents that manage heat for you
On a sunny day, the temperature inside a closed high tunnel can spike fast enough to stress your plants before you get out there to vent it. The Plus model's end wall peak vents use a wax-cylinder auto opener that reacts to temperature. When it gets warm, the vent opens. When it cools down, it closes. No electricity, no manual adjustment. It's passive climate management that works even when you're not in the field.
Double hinged doors for real working access
The base Grower model comes with a single door on each end. The Plus gives you a full 4' x 7' double hinged door on both ends, which means you can drive a wheelbarrow, cart, or small tractor attachment straight through without angling or squeezing. It also provides significantly more cross-ventilation when both sets of doors are open on warm days.
Wind exclusion panels + bug netting where it matters most
Roll-up sides are great for ventilation, but when they're open, they're also an open invitation for wind, insects, and cold air. The Plus model adds wind exclusion panels and integrated bug netting under the roll-up sides, so you get airflow when you need it without the problems that come with wide-open sidewalls. This is a Plus-exclusive feature that most growers find worth having from day one rather than trying to retrofit later.
Commercial-grade galvanized steel, American-made
Every CT Greenhouse structure uses domestically sourced, hot-dipped galvanized steel. The Plus model's 1.9" 13-gauge main bows are the same tubing used in our larger commercial greenhouse frames. It's built to handle snow loads, wind, and years of use. All components are manufactured in the USA and shipped directly to your site.
Frequently Asked Questions
Compare Our High Tunnel Models
Ready to get started? Contact us for a custom quote on your Plus High Tunnel.
Start Your Quote TodayOr call us at 860-341-8707 for a same-day quote. Already approved by NRCS? Let us know and we'll help you configure your tunnel to match your approved specs.
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