Other 3M filters I have purchased have metal meshes on both sides of the filter. This one only has a metal grille on one side, which exacerbates this problem. The filter lost its shape and became so bulky when installed that it was difficult to remove. It went in a 1" slit but came out maybe 2 1/2" thick. I had to pull it out of its nest and I'm just glad the cardboard frame held up. I bought 2 packs. The picture shows the second (still new) filter on the back (which still shows the harmonica shape characteristic of these filters) and the one I took out after 3 months of use in fairly moderate conditions. It looks like a deflated balloon. I replaced it with a traditional 3M 1200 which I know will not warp with use.
Vacuum cleaner Samsung VC20M25, red
171 Review
π Nordic Pure 20x25x4 Pleated Furnace Filter
10 Review
π¬οΈ Nordic Pure 16x20x1 Pleated Air Filter 16x20x1M12 6 Pack - High Performance Filtration Solution
10 Review
π¨ Filtrete FAPF024: The Ultimate Air Cleaning Filter for a Healthier Home
12 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
NANPU 3/8" NPT Compressed Air Filter Regulator Combo Piggyback, 5 Micron Brass Element, Poly Bowl, Semi-Auto Drain, Metal Bracket, 0-150 Psi Gauge
26 Review
NANPU DFR-02 1/4" NPT Air Drying System - Double Air Filters, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl
20 Review