AIRX FILTERS WICKED CLEAN AIR. 16x25x5 Air Filter MERV 11 Compatible with Lennox X6670 Air Filter 2 Pack - Amazon.com
GeneralAire # 4541 MERV 11 for # GF 4511 ReservePro 16x25x5 furnace filter, Actual Size:15 5/8" x 24 3/16" x 4 15/16" Case of 2 Filters- MEASURE CAREFULLY BEFORE ORDERING ! - Amazon.com
GeneralAire® 4541 16X25X5 | City Plumbing & Electric Supply
General Aire 4541 6FM1625 16 x 25 x 5 MERV 11 Filter - SupplyHouse.com