APF-7 Holmes Air Purifier Foam Pre Filter (Aftermarket)

Holmesreg; replacement foam pre-filter, fits Holmesreg; models HAP-300 and HAP 3004. This filter measures approximately 11 1/8 x 14 1/2 x 3/8 and extends the life of HEPA and Carbon Filters. The pre-filter removes large particulates from the air. This is an aftermarket filter.