24" x 24" x 4" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:24" x 24" x 4" MERV 11 - Pleated Air Filter Actual Dimensions: 23 7/8" x

Actual Dimensions: 23 7/8" x 27 7/8" x 3/4"

20" x 34" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack

This filter is comparable to 3M Filtrete Ultra Allergen: Filtrete 1250

Easy to maintain - no need to buy oil sprays or adhesives to enhance filter effectiveness

24" x 24" x 4" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:24" x 24" x 4" MERV 11 - Pleated Air Filter Actual Dimensions: 23 7/8" x24" x 24" x 4" MERV 11 Pleated Air Filter 6 Pack Actual Dimensions: 23 3 8" x 23 3 8" x 3 3 4" Filtration Group's High Capacity MERV 11 air filter is made of 100% Synthetic Media which will not promote mold or bacteria growth and has the following features: MERV 11 efficiency, UL Classified, LEED point certification, 100% recycled paperboard frame, low resistance to air flow minimizes energy costs, 100% synthetic media is moisture resistant, valuable