A larger, square version of our original Vent Cap, the Large features the same foam and durable injection molded plastic construction. It’s perfect for bedroom returns and square registers. The 16.5" square size, inside the gasket, can easily cover a 14" grill with over an inch to spare!
Like all Vent Caps, the Large can still be easily attached with the Pole RAT (remote attachment tool) so you won’t have to deal with ladders or vent tape. Get a tight seal on even the largest and hardest to reach grills with the Large from Vent Cap Systems.