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Riga V Greenhouse – Exclusive Sale

The Riga 5 is 9' 8" W x 17' 6" L x 7' 7" H  and is designed to be used to grow fresh vegetables, herbs, and flowers year round. Other greenhouses use less than 8 mm twin-wall polycarbonate panels and are considered to be season extenders, to be used when only a slight night frost might be expected during the spring or fall season.

The Riga V Greenhouse is 9 ft. 8 in. wide and 17 ft. 6 in. long, has 8 mm and 10 mm panels, and can be placed on a 20 in. wall if desired. A door drop down kit is available.

The Riga V Greenhouse is designed, engineered, and manufactured in Germany by Hoklartherm, a leading manufacturer of commercial and hobby greenhouses, sun rooms, pavilions, pool covers, home additions, and commercial building, with 28 years experience.

With a combination of strong materials and durable hardware, the Riga Greenhouse is by far the strongest greenhouse under $5,000. The polycarbonate glazing on the Riga Greenhouse is German made and believed to be of superior quality than the much more common Polygal or GE glazing. And a major advantage of the Riga Greenhouse Package’s construction method is that the frame profiles are permanently attached to each other, and won’t come loose over time due to wind pressures.


  • Size: 9 ft. 8 in. W x 17 ft. 6 in. L x  7 ft. 7 in. H
  • 165 sq. ft.
  • Over-sized rear wall window: 30 in. W x 42 in. H with adjustment arm
  • 4 roof windows: 40 in. W x 24 in. D with automatic window opener
  • Dutch Barn Door with keyed lock: 30 in. W x 79 in. H
  • 10 mm twin-wall polycarbonate wall panels in the front and rear
  • 8 mm UV-coated twin wall polycarbonate over main body
  • First-class insulation: R or K-value 3.0
  • Assembly time: 2 people, 1 full day
  • Warranty: polycarbonate 10 years; frame 15 years
  • Base Frame (optional)


Optional Base Frame (highly recommended):

  • 6 in. high
  • Attaches to the bottom of the greenhouse
  • Sits in the ground but can be mounted on top of a wood, concrete, or brick frame/wall
  • Provides 5 in. of additional inside height


More reasons to get a Riga Greenhouse:

  • Offers more window and door ventilation than another units in its class
  • Attractive and beautiful to look at – fits well in to an upscale garden setting
  • All roof windows come standard with automatic (solar-powered) window openers
  • Offers the minimum insulation needed to grow plant year-round – using less insulation costs more to heat
  • Curved side wall deflects major wind storms and are strong enough to be covered with 7 feet of snow
  • All polycarbonate panels sit on all sides in the aluminum framing: this makes the unit rigid, stronger, and better insulated
  • Comes with DVD and written Assembly Instructions
  • Made in Germany
Click here to see the 7 ft. 8 in. W x 7 ft. L Riga IIs Greenhouse standard package
Click here to see the Riga IIs –  7' 8" W x 7' L X 7' 1" H  Greenhouse package
Click here to see the Riga IIIs – 7' 8" W  x 10' 6" L  X 7' 1" H Greenhouse standard package
Click here to see the Riga IVs – 7' 8" x 14' L x 7' 1" H Greenhouse standard package
Click here to see the Riga IVs – 7' 8"  W x 14' L X 7' 1" H Greenhouse package
Click here to see the Riga III Greenhouse standard package without accessories – 9' 8"W X 10' 6" L X  7 ' 7" H 
Click here to see the Riga IV Greenhouse Package –  9' 8"W X 14' L X  7 ' 7" H
Click here to see the Riga V Greenhouse Package –  9' 8"W X 17' 6" L X  7 ' 7" H 
Click here to see the Riga XL – 14' W x 16' 5" L Greenhouse package
Click here to view other greenhouses from Exaco

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