501 Aprilaire and Space-Gard Replacement Filter (2 Pack)

Fits Research Products Model No. 5000 (Part #501)
New aftermarket Aprilaire 501 filter!!
Original accordion type design.
Package contains 2 Filters.
Protects heating and cooling equipment. Space Gard is also known as Aprilaire Furnace Filters. Reaches 99% efficiency on particles 5 microns or larger. Reduces dust buildup. High efficiency filter media collects small dust particles before they can collect on your coils. More »