FilterLock® 1 Air Filter Replacement Seal

air filter slot cover   Dan airbet88 slot

The filter is placed in the return air grill

It eliminates air leakage at the filter slotdoor to improve indoor air quality and reduce energy consumption Features: Cover furnace filter slotdoor; Block FR20253-2SLOT BELVENT FILTER RACK 20 X 25 W 2 SLOT 2 FILTERS F200F1625 HONEYWELL HOME MEDIA AIR CLEANER FILTER 16X25X4 MERV 13

slot powers We're All About Sealing Up Ductwork In the video above we explain a very easy simple tip to seal the space around your furnace filter slot  filter , it is always bent inward towards the furnace fan I assume that it gets covered with dust first, then the air