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12 x 20 x 4 MERV 8 Pleated Air Filter
Actual Size: 11 7/8″ x 19 7/8″ x 3 3/4″
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White-Rodgers FR1600M-111 Compatible Air Filter – 20 x 20 x 4 – MERV 11- White-Rodgers FR1600M-108 Compatible Air Filter – 20 x 20 x 4 – MERV 11
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20 x 24 x 4 MERV 11 Pleated Air Filter- 20 x 24 x 4 MERV 8 Pleated Air Filter
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