CURRENTLY OUT OF STOCK

TMG-GHA1221

Alpine Series 11' x 21' Sunroom Greenhouse, 8'4" Height, Polycarbonate Roof and Glass Walls, Heavy Aluminum Frame, Slide & Lock Assembly, TMG-GHA1221

Name: Alpine Series 11' x 21' Sunroom Greenhouse, 8'4" Height, Polycarbonate Roof and Glass Walls, Heavy Aluminum Frame, Slide & Lock Assembly, TMG-GHA1221
Brand: TMG Industrial CA
SKU: TMG-GHA1221
Price: 6799.0 CAD
Availability: OutOfStock

Large outdoor sunroom greenhouse with glass walls, seating and plants

CURRENTLY OUT OF STOCK

SKU TMG-GHA1221

$6,799.00 CAD - $6,799.00 CAD

$6,799.00 CAD

$6,799.00 CAD - $6,799.00 CAD

$6,799.00 CAD

FREE

shipping to most locations in

Canada

Delivered in 10 to 15 business days

Learn More

1-877-761-2819

cs@tmgindustrial.ca

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Alpine Series 11' x 21' Sunroom Greenhouse, 8'4" Height, Polycarbonate Roof and Glass Walls, Heavy Aluminum Frame, Slide & Lock Assembly, TMG-GHA1221

Modular Expandable Design: Flexible frame architecture allows seamless extension in length by adding 2-section modular assemblies anytime.
Pre-Installed Assembly Nuts: Revolutionary pre-installed profile nuts eliminate loose hardware, cutting total setup time by over 50%.
Heavy-Duty Box Frame: Engineered with high-grade box-section aluminum profiles and full horizontal wall and roof bracing.
Hybrid Glazing Construction: Combines clear tempered glass walls for high visibility with twin-wall UV-protected polycarbonate roof panels.
Deep Glazing Channels: Securely holds panels inside the frame profile to prevent blowouts during severe wind conditions.
Integrated Gutters: Built-in drainage system featuring 4 aluminum downpipes for effective rainwater collection and runoff management.
Enhanced Ventilation Control: Equipped with 6 large opening roof vents to maximize airflow, regulate internal temperatures, and maintain optimal growing conditions.

Footprint (Square Footage): 239.0 sq. ft (22.2 sq. metres)
Overall Dimensions (W x L x H): 11' 4" x 21' 3" x 8' 4" (345 x 649 x 254 cm)
Eave Height: 4' 11" (150 cm)
Ridge Height: 8' 4" (254 cm)
Door Style: Hinged double opening door
Door Opening Size (W x H): 5' 3" x 5' 10" (159 x 179 cm)
Roof Vent Size (W x H): 1' 10" x 2' 7" (56 x 80 cm)
Number of Roof Vents: 6
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
Design Wind Resistance: 110 km/h (68 mph)
Design Snow Load: 90 kg/sq. m (18.4 PSF)

Transform your outdoor living area and elevate your plant cultivation with the TMG Industrial Alpine Series 11' x 21' Sunroom Greenhouse. Designed to deliver an ideal balance of aesthetic elegance and structural strength, this greenhouse features high-grade 4mm tempered glass side walls for panoramic outdoor views and high light transmission. The roof is outfitted with impact-resistant 6mm twin-wall hollow polycarbonate panels that insulate against temperature swings and filter harmful UV rays, creating a protected sanctuary for seedlings, delicate flowers, and year-round gardening.

Built around an ultra-heavy-duty box section aluminum frame, the structure utilizes full horizontal bracing across all walls and roof sections to withstand extreme environments. Featuring 10mm deep aluminum glazing channels, all glass and polycarbonate panels are locked firmly into place, eliminating panel blowouts even during winds exceeding 110 km/h and supporting heavy winter snow loads up to 90 kg/sqm. Integrated gutter networks with four aluminum downpipes effectively capture and channel rainwater off the roof structure.

What truly sets the Alpine Series apart is its innovative assembly technology. Designed to streamline setup, all assembly nuts come pre-installed directly inside the aluminum channels, eliminating the tedious process of sliding loose bolts into place and reducing overall assembly time by over 50%.

The modular design also enables easy expansion, allowing you to increase the overall length using 2-section add-on kits whenever your garden grows. Featuring a smooth hinged double entry door and six large opening roof vents for optimized airflow, this sunroom greenhouse offers a durable, elegant, and low-maintenance retreat for every growing season.

TMG also carries the following sunroom greenhouses and extension kits:
TMG-GHA1208
TMG-GHA1210
TMG-GHA1216
TMG-GHA12X (extension kit).

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 7 carton and wood crate shipping boxes.
Shipping Dimensions:
Base Greenhouse Unit (TMG-GHA1210):
Box A (Aluminum Frame, carton): 133" x 12" x 8" (337 x 30 x 20 cm)
Box B (Aluminum Frame, carton): 80" x 12" x 10" (204 x 30 x 25 cm)
Box C (Glass & Polycarbonate Panels, Wood Crate): 77" x 37" x 12" (195 x 95 x 30 cm)
Extension Kit #1 (TMG-GHA12X):
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)
Extension Kit #2 (TMG-GHA12X):
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: 1413 lbs (641 kg) total

Shipping from Richmond, BC, or Mississauga, ON

What happens after you place your order?

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

Dimensions and capacity
	Alpine Series 11' x 21' Sunroom Greenhouse, 8'4" Height, Polycarbonate Roof and Glass Walls, Heavy Aluminum Frame, Slide & Lock Assembly, TMG-GHA1221$6,799.00 CAD	Alpine Series 11.5' x 20.5' Greenhouse, 9' Height, Expandable Aluminum Frame, Tempered Glass Walls and Polycarbonate Roof, Quick-Connect Assembly TMG-GHA1120 $5,299.00 CAD	Alpine Series 14' x 9' Gazebo-Style Greenhouse, 8.8' Height, Heavy-Duty Aluminum Frame, 4mm Tempered Glass Walls, and 6mm Polycarbonate Roof, TMG-GHA1409$3,199.00 CAD
Ridge Height	8'4" (2.54 m)	8'9" (2.67 m)	8'10" (2.68 m)
Door Size	5'3" x 5'10" (1,600 mm x 1,778 mm)	3'8" x 6'9" (1,118 mm x 2,057 mm)	4'5" x 6'0" (1,346 mm x 1,829 mm)
Eave Height	4'11" (1.50 m)	5'5" (1.65 m)	6'1" (1.85 m)
Overall Dimensions	11'4" x 21'3" x 8'4" (3.45 m x 6.48 m x 2.54 m)	20.5' x 11'7" x 8'9" (6.25 m x 3.53 m x 2.67 m)	13.8' x 9.4' x 8.8' (4.21 m x 2.87 m x 2.68 m)
Roof Vent Size	1'10" x 2'7" (560 mm x 800 mm)	2'1" x 2'3" (635 mm x 686 mm)	2'1" x 2'3" (635 mm x 686 mm)
Construction and materials
Frame Thickness	0.039-0.079" (1.0 mm-2.0 mm)	0.039-0.071" (1.0 mm-1.8 mm)	0.039-0.071" (1.0 mm-1.8 mm)
Frame Material	box section aluminum frame	Powder-coated aluminum	Powder-coated tubular aluminum
Wall Material	0.16" (4 mm) clear tempered glass	0.16" (4 mm) tempered glass	0.16" (4 mm) tempered safety glass
Roof Material	0.24" (6 mm) twin-wall polycarbonate with UV protection	0.24" (6 mm) hollow polycarbonate	0.24" (6 mm) hollow polycarbonate panels
Features and accessories
Assembly System	Slide & Lock Assembly	Quick-Connect Assembly	quick-connect system