Parts
Air purifier and humidifier parts: a model number in, the filter that fits it out, with the cross-fit alternatives and the maker document that says so.
Each parts page starts from a model number and ends at the filter or wick that fits it, with the cross-fit alternatives named and the manufacturer document that establishes the fit cited.
Furnace filters 2 pages
Match
Furnace Filter Sizes: Nominal vs Actual, by Maker
A 16x25x1 measures 15.5 x 24.5 x 0.75 in at Nordic Pure; a nominal 20x25 media filter has five actual sizes; the AprilAire 410 is 16.52 x 29.38 x 4 in.
Match
4 in Media Filter by Cabinet: AprilAire, Honeywell
AprilAire 1210/2210/3210/4200 take the 210 or 213 (20.6 x 26.63 x 4 in actual); 1410/2410/3410/4400 the 410 or 413; Honeywell F100/F200 the FC100A1037 or FC200E1037.
Smoke and CO alarms 1 pages
Match
Hardwired Smoke Detector Replacement by Brand
Kidde 20-9003 fits Kidde and Firex harnesses only; First Alert SMI100-AC replaces the BRK 9120B, no rewiring; USI names no cross-brand fit; 10-year limit.
Humidifiers 1 pages
Match
Humidifier Filter by Model: Wick and Panel Numbers
Honeywell HCM-350 takes Filter A HAC-504 (30 to 60 days), HEV615/620 take Filter T, Aprilaire 600/700 take Panel 35 yearly, the 400 takes Panel 45 twice a season.
Air purifiers 1 pages
Match
Air Purifier Replacement Filter by Model
Levoit Core 300-P takes Core 300-RF (6 to 8 months), Coway AP-1512HH and 200M share set 3304899, Winix 5500-2 takes Filter H 116130, HPA300 holds 3 HRF-R.