Automatically opens your roof vent as the greenhouse heats up

For professional installation services

In the 2nd stage it is digested rapidly with generous ventilation

This piece is built from glass fiber reinforced concrete

The Premium Package Includes:

Hoklartherm | FREE 6 inch High Foundation Frame with select Riga Greenhouses Size:RIGA S3 (7'8" W x 10'6" L x 6" H) (Free with greenhouse) Automatically opens your roof ventAdd this Foundation Frame to your cart with a corresponding Riga greenhouse and the price for the Frame will automatically become FREE with your purchase. Applies to RIGA S2, S3, S4, L3, L4, and L5 greenhouse models when ordered and delivered together with the Foundation Frame, during this month only! This 6" high Foundation Frame only works with the Hoklartherm RIGA Greenhouses. It can be used to replace a concrete or wooden footing. It will be