Item Tag: For Aprilaire, For Spacegard

(2) Bestair A401-SG4-11R 11 MERV Pleated Air Filter 16″ H x 27″ W x 6″ D

Replaces Part Number 401, SG4. Compatible with Aprilaire SpaceGard 2400 Furnace Air Cleaners. OUR PLEDGE TO YOU.