Help ensure proper air circulation in your fabric-covered storage shelter with help from the ShelterLogic AutoVent⢠Automatic Shelter Vent Kit, which features a bimetallic spring that starts opening the vent at 74°F (fully open at 104°F) and closes the vent after the air cools. A screened design helps keep insects and debris out, and the 2-sided, plastic pop rivets provide an airtight seal. ShelterLogic AutoVent⢠Automatic Shelter Vent Kit White - Canopy/Car Ports at Academy Sports