As someone else said, filters are not marked so there is no way of knowing for sure if you are getting the correct MERV. I tried to write to the company but no reply. Also all my other filters had 2 foam strips at the top and bottom. I'm assuming air is going through the filter, not above or below it. It's not like this.
Filter under the sink Aquaphor Favorit ECO silver
20 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
NANPU Compressed Air Filter Regulator Combo: Brass Element, Semi-Auto Drain, 0-150 Psi Gauge, And More
21 Review
NANPU DFR-02 1/4" NPT Air Drying System - Double Air Filters, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl
20 Review