Review on Nordic Pure 16X24X2M12 3 Pleated Condition by Kevin Carr

Rule of thumb: more pleats = more surface area = less flow restriction. Thanks to the now famous Revain double packaging, the goods arrived on time and in good condition. They have a decent cardboard frame and construction, and the filter media is reinforced with wire mesh to stiffen the surface and prevent warping/bending when the A/C is running. Actual block size in frame is 15 3/8" x 23 3/8" x 1 3/4". If your system uses a filter of this size and can handle the limitations of a MERV 12 filter, I would recommend them based on price and value. I purchased this item to change the air conditioning filtration system at a customer's home to achieve a higher MERV rating. without reducing the flow of the CFM system. The customer has 4-6 feral cats that come in and out daily and produce a lot of dust, dander and hair. The original 20 x 25 x 1" single filter (other brand) had 25 pleats giving a surface area of about 1220 square inches [25*2*24.5"*1". This size limited the flow when I was on Upgraded MERV 5. My modification was to install Frame A in the return air duct/frame and have two 16x24x2 filters which should increase the surface area by more than 2.5x and compensate for the increased confinement of a single MERV 12 unit. The 2" filters I received only have 14 pleats each. That's about 1140 square inches. Each [21*2*23.375"*1.75"], giving me a factor of about 2.8 would be what I would prefer.While they will work since the area magnification factor is only about 1.8, it wouldn't allow me to get an even higher MERV rating if only b higher rated units don't have a bigger footprint, up which I cannot rely on without further investigation.