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  Product Quantity Price Efficiency [?] Purchase
12x36x1 AIRx DUST Air Filter - MERV 8 [More..] 12 filters $8.95 each
($107.40 total)
MERV 8
40%
12x36x1 AIRx DUST Air Filter - MERV 8 [More..] 6 filters $9.95 each
($59.70 total)
MERV 8
40%
Best $$ Value! (based on efficiency and price)
12x36x1 AIRx ALLERGY Air Filter - MERV 11 [More..]
12 filters $11.19 each
($134.28 total)
MERV 11
75%
12x36x1 AIRx ALLERGY Air Filter - MERV 11 [More..] 6 filters $12.49 each
($74.95 total)
MERV 11
75%
12x36x1 AIRx HEALTH Air Filter - MERV 13 [More..] 12 filters $14.29 each
($171.48 total)
MERV 13
90%
12 x 36 x 1 Filtrete Micro Allergen Reduction Filter - #9814 [More..] 6 filters $15.95 each
($95.70 total)
MERV 11
75%
12x36x1 AIRx HEALTH Air Filter - MERV 13 [More..] 6 filters $15.95 each
($95.70 total)
MERV 13
90%
12x36x1 AIRx ODOR Air Filter - CARBON [More..] 12 filters $16.65 each
($199.80 total)
MERV 4
12x36x1 AIRx ODOR Air Filter - CARBON [More..] 6 filters $19.82 each
($118.90 total)
MERV 4
12 x 36 x 1 Filtrete Ultra Allergen Reduction Filter - #2014 [More..] 6 filters $19.99 each
($119.94 total)
MERV 11
85%