Disposable White Fine Filters for Puritan Bennett 420G, 420S, 420SP, 420E CPAPs and 425 Bilevel (5 Pack)Reusable Foam Filters (5 Pack) and Disposable Fine Filters (5 Pack) by AG Industries are CPAP filter replacements compatible with the following Puritan Bennett CPAP machines:420G420S420SP420E CPAP425 BilevelReusable Foam Filters (5 Pack) Dimensions: 1 3/4" x 7/8"Disposable Fine Filters (5 Pack) Dimensions: 1 3/4" x 13/16"WhiteManufacturer: AG Industries SKU: AG41395002-V Select Size: *Please selectReusable Foam (5 Pack) [+$9.95]Disposable Fine (5 Pack) [+$8.95] $0.00 Qty: Add to cart Ship toSelect countryUnited States of AmericaUnited States of AmericaUnited States of America *Other *Shipping MethodNameEstimated DeliveryPriceNo shipping optionsApply Custom wishlist OKAdd to wishlistAdd to compare listEmail a friendcpap filter, reusable cpap filter,cleaning cpap machine,cpap cleaning machine,foam filter,cpap filter,cpap machine supplies