540031 - FilterLock - Filter Slot Cover

The Filter Slot Seal is ideal for any furnace, air conditioner or air cleaner filter Based on recommendations by the Department of Energy, you should cover

You should put a cover over the slot The fan pressure should keep the filter covering the inlet pretty well, but the fan will draw air through

filter slot The Department of Energy Says - Coverseal furnace filter slot to eliminate air leaks Dimensions - 4-34 Wide

phoenix sun slot Full profile, standard height design, can fit in most full profile computer cases Cover up open PCI slots with these standard case vented slot covers, improve