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Riga XL 5 14’ x 16’ Greenhouse

Original price $14,999.00 - Original price $18,399.00
Original price
$14,999.00 - $18,399.00
Current price $14,999.00
Variant: Greenhouse Only

This greenhouse is highly durable with anodized aluminum frame and gothic arc shape allowing snow and rain to easily slide off. The greenhouse can withstand 120 MPH wind and 35 pounds of snow per square feet.


  • Durable UV-coated polycarbonate twin-walls
  • Anodized Aluminum frame
  • 16mm polycarbonate side-walls 
  • 16mm polycarbonate end-walls
  • 2 Barn style door w/lock and key
  • 4 roof windows 
  • Heavy-duty rubber seals and silicone caulking 
  • Pro Accessory kit offered for full set up 
  • 10 Year Warranty

Est. Ship Date: 2-4 Weeks Fulfillment

The Riga XL 5 is a highly durable and high quality greenhouse. It comes with extra-thick 8mm UV coated polycarbonate side walls and 10mm UV coated polycarbonate end walls (front and back). 

This greenhouse is highly durable with anodized aluminum frame and gothic arc shape allowing snow and rain to easily slide off. The greenhouse can withstand 120 MPH wind and 35 pounds of snow per square feet. 

For improved insulation, the Riga comes with heavy duty rubber seals that can seal the entire greenhouse.  

The Riga 4 provides better airflow with its oversized rear-wall window, two 40in wide x 24in long roof windows, and the large 30in x 79in barn-style door. 

The roof windows come with an automatic opener. These operate without electricity or batteries because of a special black cylinder loaded with paraffin. The material inside expands and contracts due to temperature differences. It pushes the window wide open when it gets warm indoors and shuts the window when it cools down.

Key Features:

Durable UV-coated polycarbonate triple-walls

Anodized Aluminum frame

16mm triple-wall polycarbonate side-walls 

16mm triple-wall polycarbonate end-walls

2 Barn style doors w/lock and key

4 roof windows 

Heavy-duty rubber seals and silicone caulking 

10 Year Warranty

Pro Accessory Kit Includes: 

1x top shelf and 1x bottom shelf

3 sets of professional LED Grow Lights

1x  24” intake shutter vent

1x 20” exhaust fan

1x thermostat to control vent and fan

1x 17,500 BTU 220 V heater

5x heavy-duty seed trays

10x stainless steel hooks

10x heavy-duty plastic “hooks”

Assembly Facilitation Kit: 25′ metric tape measure, 10mm socket wrench, 10 mm open wrench, 2 20′ J-hook ratchet straps, window restraint cables, 2 tubes Boss 399 silicone caulk, permanent marker


Assembled Width (Ft) 14
Assembled Length (Ft) 16.5
Assembled Height (Ft) 9.10
Door Size 37.5” W x 74” H
Floor Space (Sq/Ft) 231
Window Size 37.5" W x 39.5” L


Wind Resistance 120 mph
Snow Capacity 30 pounds per square feet
Frame Material Anodized Aluminum
Side-Wall Thickness 16mm Polycarbonate Triple-wall
End-Wall Thickness 16mm Polycarbonate Triple-wall
Warranty 10 Years on Polycarbonate Panels; 15 Years on Frame
  • Heavy Duty

  • Wind Resistance Up To 120MPH

  • Snow Load Up To 35lbs Per Square Foot


No, but you can purchase a foundation frame separately. You can also purchase the greenhouse kit which includes a bottom shelf, top shelf, and foundation frame.

Yes, all Riga Greenhouses are built to be last extreme weather conditions. 8mm and 10mm polycarbonate wall panels make it highly durable and provide great insulation against the weather outdoors. 

Riga greenhouses are designed to give you ideal growing conditions all year long. 

Assembly instructions should come with your greenhouse shipment. You can also get a digital copy of the greenhouse instructions and instructional videos by contacting our customer service team via photo, chat, or email. 

Assembly time depends on the number of people assisting as well as the overall size of the greenhouse. In most cases. With two people and an 8’ x 10’ greenhouse, it can take anywhere from 6 hours to 10 hours.

Yes, you can assemble Riga Greenhouses during winter but the parts will be stiffer. In particular, the polycarbonate panels need to be bent to fit into place. It’s recommended that you store the panels inside to keep them warm before installation. 

Riga greenhouses are very durable and can withstand significant snow loads. The Riga can withstand 35 psf. 

How much wind can the Riga Greenhouse withstand? 

The Riga Greenhouse can withstand wind gust up to 120 MPH for 2-3 seconds.

The Riga Greenhouse does not come with a floor or base. You can purchase a foundation frame for the greenhouse. 

Yes, Riga Greenhouses have a limited warranty.

This product carries a 15-year limited warranty on the greenhouse frame (aluminum parts and stainless-steel hardware); and 10-years on the Twin-Wall, and 15-years on Triple Wall Polycarbonate, glazing (pro-rated after 5-years) against defects in material and workmanship when properly assembled using only manufacturer’s original equipment parts in accordance with manufacturer’s assembly instructions.

Warranty does not cover damage resulting from:
Excessive loads placed on the packed product and/or parts (beyond reasonable expectations).
Glazing breakage caused by large hail, rocks or other projectiles (including rocks thrown by a lawnmower).
Use of force, incorrect handling, or inappropriate use, neglectful use or assembly or maintenance, commercial use or use other than for personal or household purposes.
Alteration, painting, connecting, gluing, sealing or assembly not in accordance with the manufacturer’s instructions.
Extreme storms, wind, flood, fire or other extreme weather conditions.
Nor does it cover operating parts such as pistons in automatic window openers or other accessories provided with the greenhouse which are breakable in ordinary use. Replacement part will be provided at a reasonable cost.

No, the Riga greenhouse comes with only one door but there is an option for a door extension kit. The Riga Greenhouse comes with a large window on the back wall for improved ventilation.

The stability and long-term service of a greenhouse relies heavily on the preparation of a firm foundation for placement and fixing. If you install a greenhouse on a ground with low moisture content it is highly recommended to use a ground cover or weed barrier, which will allow water to drain through the fabric while keeping weeds from growing.

It can be anchored to a foundation, depending on the greenhouse, some have compatible holes at the bottom of the greenhouse base, and some have their own integrated anchoring.

Yes, the greenhouse can be anchored to a concrete slab. It can be anchored directly to the ground using ground stakes (ground stakes are not supplied with the greenhouse kits).