This Vitavia Univent Autovent for IDA Lean to's is filled with wax, when the wax reaches a certain temperature it opens your greenhouse roof vent. Once the wax cools and solidifies the vent closes to keep the heat inside your greenhouse.
A Greenhouse frame that stays like new!
Anodised Aluminium Frames are standard on Vitavia Greenhouses. Anodising an aluminium greenhouse frame offers protection, corrosion resistance and hardness to keep your greenhouse frame looking pristine and shiny throughout its life.