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TMG-GHA12X

5' Extension Kit for Alpine Series 11' Wide Sunroom Greenhouses, 8'4" Height, Polycarbonate Roof and Glass Walls, Heavy Aluminum Frame, Slide & Lock Assembly, TMG-GHA12X

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CURRENTLY OUT OF STOCK

SKU TMG-GHA12X

Original price $1,599.00 CAD - Original price $1,599.00 CAD

Original price

$1,599.00 CAD

$1,599.00 CAD - $1,599.00 CAD

Current price $1,599.00 CAD

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$1,599.00 CAD

Total: $1,599.00 CAD $1,599.00 CAD

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cs@tmgindustrial.ca

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5' Extension Kit for Alpine Series 11' Wide Sunroom Greenhouses, 8'4" Height, Polycarbonate Roof and Glass Walls, Heavy Aluminum Frame, Slide & Lock Assembly, TMG-GHA12X

(Accessories Incl.)

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Features Specs Description Shipping Info Warranty Reviews

Features

• Modular 5'3" extension increases your growing footprint without installing a new greenhouse, adding 59.2 sq. ft. of space.
• Designed to integrate seamlessly with Alpine Series 11' (TMG-GHA12) greenhouse units for straightforward expansion.
• Ultra-heavy-duty tubular aluminum frame preserves the series' high wind and snow load ratings.
• Quick-connect slide & lock assembly with pre-installed nuts for fast, secure installation into the existing frame.
• Hybrid glazing—4 mm tempered glass walls for clear visibility plus 6 mm twin-wall polycarbonate roof panels for improved insulation and UV protection.
• Includes two roof vents to improve airflow and help maintain optimal environmental conditions in the expanded space.

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Specifications

• Footprint (Square Footage): 59.2 sq. ft (5.5 sq. metres)
• Overall Dimensions (W x L x H): 11' 4" x 5' 3" x 8' 4" (345 x 160 x 254 cm)
• Eave Height: 4' 11" (150 cm)
• Ridge Height: 8' 4" (254 cm)
• Roof Vent Size (W x H): 1' 10" x 2' 7" (56 x 80 cm)
• Number of Roof Vents: 2
• Wall Glazing Material: 4mm clear tempered glass
• Roof Glazing Material: 6mm twin-wall polycarbonate with UV protection
• Aluminum Frame Thickness: 1.0 - 2.0 mm
• Aluminum Frame Coating: black powder-coating
• Compatible Models:
  TMG-GHA1208
  TMG-GHA1210
  TMG-GHA1216 (one extension kit included)
  TMG-GHA1221 (two extension kits included)

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Product Description

Expand your growing footprint with the 5' 3" Extension Kit for the 11' Alpine Series Greenhouse. This modular addition integrates seamlessly with TMG-GHA12 series greenhouse units, allowing you to increase cultivation space without installing an entirely new structure. Built with ultra-heavy-duty tubular aluminum, it maintains the series' high wind and snow load ratings.

Installation is fast and efficient through the quick-connect assembly system, utilizing pre-installed nuts to securely lock components into the existing frame. The extension kit also features the premium hybrid glazing design, combining 4 mm tempered glass walls for crystal-clear visibility with 6 mm hollow polycarbonate roof panels for enhanced insulation and climate control.

Two additional roof vents are included to improve airflow and environmental management, helping maintain optimal growing conditions throughout your expanded greenhouse space.

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Shipping Information

Your order will be shipped from one of our main warehouses in Canada. Orders are typically processed and shipped within 2 to 3 business days under normal circumstances. Delivery usually takes 10 to 15 business days, depending on location and accessibility.

• This product is packed in 2 carton and wood crate shipping boxes.
• Shipping Dimensions:
  Box A (Aluminum Frame, carton): 79" x 12" x 7" (200 x 30 x 17 cm)
  Box B (Glass & Polycarbonate Panels, Wood Crate): 77" x 39" x 6" (195 x 98 x 15 cm)
• Shipping Weight: 322 lbs (146 kg) total

Shipping from Richmond, BC, or Mississauga, ON

What happens after you place your order?

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Warranty

We know that when you invest in equipment, you're counting on it to perform day in and day out. At TMG Industrial, that trust means everything to us. That’s why we include a 1-year Warranty with every product we sell—because you deserve confidence with every purchase.

Our warranty is there to make sure your equipment stays reliable across the seasons, covering any issues caused by manufacturing defects in materials or workmanship. From fieldwork to property maintenance, you can count on your TMG equipment to deliver.

More than just warranty coverage, we’re committed to supporting you throughout the life of your machine. Our customer service team is here to help, whether you need technical advice, troubleshooting, or parts support.

For full warranty terms, please see our warranty policy

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