[3 of 4 customers found this review helpful]
Comments about Foam Tape Products 1/2" X 25' Roll Filter Gasket Tape (JVCC SCF48-0):
Works well for filters 1/2 inch smaller than the vent opening if you place a strip of the gasket tape on two sides of the vent opening. If you place a strip of the tape on all four sides of the opening the filter won't fit.
[4 of 4 customers found this review helpful]
Comments about Foam Tape Products 1/2" X 25' Roll Filter Gasket Tape (JVCC SCF48-0):
Most filters are too small for the filter back grilles in your return air opening. Even if you have a perfectly sized match of grille and filter, the filter lets a lot of air get sucked around its corners and edges unfiltered (and often noisy). Using a Filter gasket is well worth the few extra dollars. Makes a tight seal around filter, increases efficiency and quietness of filters. Get some!