
I bought these to save $20-$30 on OEM filters and so far I'm happy. The materials appear to be of the same quality as the originals, the cardboard frame feels as thick and rigid as Carrier brand filters. Deflection in creases near the outer edges but leaves no gaps so fit or function doesn't appear to be compromised. As you can see in my third drawing, they seem to have fixed the missing guide arrows. which other reviewers have pointed out.

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 Air Drying System With Double Filters And Pressure Regulator Combo For Clean And Controlled Air Supply
18 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