Camco RV Vent Insulator with Reflective Surface fits snugly in RV vent opening with a full 2.75" of foam to help stop heat transfer, keeping your RV cooler in summer and warmer in winter. Reflective surface blocks 100% of the sun's damaging rays. Fits standard 14" RV vents. Fits standard 14" RV vents Reflective surface blocks the sun's damaging rays Full 2.75" of foam to hel...