Insulated Filter Housings 18.5" x 21" for a 16" x 20" Filter - Fits both 1" and 2" filter
Item #: 433211
MFR #: 433211
Insulated Filter Housings 23.5" x 21" for a 22" x 20" Filter - Fits both 1" & 2" Filter
Item #: 433218
MFR #: 433218
The Metal Shop 433152 Filter Housing -Magnetic Door Filter Housings -21.5 X 22" for a 20 X 20" Filter
Item #: 433152
MFR #: 433152
Filter Housing 18.5" x 22" (16" x 20" Filter)
Item #: 433149
Item #: 1333