Rugged and Efficient Design

By combining an elegant and sturdy aluminum structure, a superior fit and finish, and virtually unbreakable 8mm twin-wall polycarbonate sheeting (and its excellent insulating properties) add in a straightforward assembly plan and it makes a Therma-Gro greenhouse perfect for the backyard, hobby or institutional grower.
   All ThermaGro models are built with a sturdy, white, baked enamel aluminum structure, sheeted with PolyGal 8mm Twin wall polycarbonate sheeting, which is sealed with neoprene and PVC sealing strips providing a hermetically sealed greenhouse. The standard clear 8mm sheeting has 85% light transmission and a 10 year manufacturer's warranty not to chip, crack, fade, peel or discolor. We guarantee the greenhouse structure to be free from defect and workmanship and stand behind the quality of the structure for 5 years from date of purchase.



Straight Wall Kits are  available in 10 different
sizes from 8'x8' to 12'x 20'.
The 8mm clear, "twin Wall" Polycarbonate sheeting
(glazing) is warranted for 10 years excessive yellowing. 8mm double wall glazing means 60% less energy costs than single pane glass.


Whichever ventilation
system you choose, the
VORTEX-electrified and
automated venting sys-
tem or the ASTRO- full
length mechanical ridge  vents both operate automatically (and  silently) without electricity!


Our Curved "Gothic Arch"
style greenhouse kit is
available in 10 sizes,
from an 8'x8' to 12'x20'.
All kits utilize the same shatterproof 8mm twin wall polycarbonate sheeting.