Automatic Vent Opener Replacement Cylinder Fireside Bundle Produce your own milk

Produce your own milk

A dedicated 20 amp circuit is recommended

Ceiling height - 6'-7"

Your plants will show their appreciation by producing bigger

An 8" x 10' roll of bag material is included as a bonus

Automatic Vent Opener Replacement Cylinder Fireside Bundle Produce your own milkThis product is a replacement cylinder to fix an automatic vent opener for the GardenHouse greenhouse. Automatic vent operators on the roof and base vents require no electricity or batteries. The vent operator contains a paraffin (wax) that expands when the temperature reaches about 65F, pushing the vent open to its fully opened position at about 85F. The operators springs draw each vent closed as it cools and the paraffin contracts. It is adjustable