Air Quality

21-1/2 x 23-5/16 x 1 MERV 8 ( MPR 600, FPR 5-6 ) 1" Air Filters for AC & Furnace. Case of 12. Exact Size: 21-1/2 x 23-5/16 x 3/4

Filter King 16.25x21x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 16.25 x 21 x .75"

20x25x1 (19_1/2x24_1/2) Pleated MERV 8 Air Filters 12 Pack

SpiroPure 13.38x23.13x1 MERV 13 Pleated Filter Air Filters - Made in USA (6 Pack)

Aerostar 16x20x4 MERV 11, Pleated Air Filter, 16 x 20 x 4, Box of 3, Made in the USA

Nordic Pure 10x10x1 Furnace Air Filters MERV 8 Pleated Plus Carbon 12 Pack

Fellowes AeraMax 90/100/DX5 True HEPA Air Purifier Filter 4/Carton (9287001)

True HEPA Filter Replacement For Honeywell HRF-H2 Fits Air Purifier Model HPA050, HPA150, HPA060, HPA160, HHT055 and HHT155, 12 Filters

Manufacturer Varies Filter Roll,20 in.x90 ft.x1 in.,MERV 7 4WZ68

Global Industrial Ultrasonic Humidifier - Cool Mist 300 Pints Output Per Day

Nordic Pure 18x24x4 (3 5/8) Pleated MERV 7 Air Filters 6 Pack

Filter King 21.5x23.25x2 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 21.5 x 23.25 x 1.75"