Air Purifier Filters

3M FAPF-UCTFN-4. Width: 20.5" (520 mm), Depth: 0.197" (5 mm), Height: 23.8" (604 mm)

Fellowes 9372101. Width: 12.5" (317.5 mm), Depth: 0.189" (4.8 mm), Height: 16.3" (412.8 mm). Dimensions (W x D x H) (imperial): 408.00 x 314.00 x 5.00"

Fellowes 9372001. Width: 10.9" (276.2 mm), Depth: 0.189" (4.8 mm), Height: 13" (330.2 mm)