Related posts

Feature

BOOST air to the rooms you need it
BLOCK air in unoccupied rooms
SAVE MONEY- heat and cool only the rooms you use
NO AIR GAPS- The only cover that conforms to the vent damper creating a COMPLETE SEAL
For STEEL Vent faces sized 5.5 to 5.75 wide & 11.5 to 12 long. Please measure before ordering