Synfil Micro Allergen Furnace Air Filter -- 20 x 25 x 4 -- MERV 11 -- 6 Pack (6 Filters) Review

Average Reviews:

(More customer reviews)Despite being labelled 20 x 25 x 4 filters, they are smaller than that. As a result, they don't fit tightly into the air handling unit. This defeats the whole purpose of having a micro allergen filter since air spills around the outside of the filter. I recommend looking for a different filter brand.

Click Here to see more reviews about: Synfil Micro Allergen Furnace Air Filter -- 20 x 25 x 4 -- MERV 11 -- 6 Pack (6 Filters)

Synfil' 4" filters are for high flow HVAC units. Get more info on this item by clicking on link(s) provided under the picture. We sell this filter by 6 pack (6 filters per pack) only! Please note that this filter will "NOT FIT" the HONEYWELL FURNACE UNITS. Actual Product Size is:19 1/2" x 24 1/2" x 3 3/4".

Click here for more information about Synfil Micro Allergen Furnace Air Filter -- 20 x 25 x 4 -- MERV 11 -- 6 Pack (6 Filters)