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YORK S1-MAC202005 or GF4531

GF 4531 Aftermarket 20x20x5. Actual Size 20 3/4" x 19 3/4" x 4 15/16" MERV 11 Case of 3.

$105.00

Aftermarket 20 x 20 x 5 Pleated Filters Actual Size 20 3/4" x 19 3/4" x 4 15/16" MERV 11 Rating Also fits: S1 # S1-FM10202005, Source 1 # S1-MAC202005,...

York 20 x 20 x 5 Part No. S1-MAC202005 or GF4531 / MacTwenty, 20x20x5. Package of 3

$105.00

# S1-MAC202005 Actual Size 20 3/4 x 19 3/4 x 4 15/16. Package of 3