I am returning them. The box was labeled MERV12, which I ordered, but the filters inside were unlabeled. I looked at the filter cloth and it didn't look like MERV 12 filter media so I pulled out a Bigbox FPR4 filter (which is equivalent to MERV6 or MERV8). Of course, side by side, the FPR4 filter media looks identical to the Nordic MERV12 media. Same thickness, same light transmission, same fluffiness. The only difference is that the Nordic MERV 12 had a stronger cardboard frame on both sides, so it's better made that way, but the FPR4 has twelve for the same price. See photo, large box on the left, Nordic on the right. The product also arrived damaged with a hole in the box due to the lack of inner packaging, the first filter was damaged and due to the lack of plastic packaging all filters were exposed to the elements. At $34 for 6 it's not the best value given the comparable quality.
NANPU Air Drying System With Double Filters And Pressure Regulator Combo For Clean And Controlled Air Supply
18 Review
NANPU 1 FRL Air Filter Regulator Lubricator Combo With 0-150 Psi Gauge, 5 Micron Brass Element, Poly Bowl & Semi-Auto Drain - Metal Bracket Included
20 Review
NANPU Compressed Air Filter Regulator Combo: Brass Element, Semi-Auto Drain, 0-150 Psi Gauge, And More
21 Review
π§ NANPU 1/2" NPT Compressed Air Filter Regulator Combo Piggyback with Auto Drain, 5 Micron Brass Element, Poly Bowl, Metal Bracket, and 0-150 psi Gauge
18 Review