Aprilaire - Model 810 - 20" H x 25" W - Replacement Competitive Media Filter - 10 MERV Rating - Requires Model 4897 Kit - for Carrier EZXCAB1020/Honeywell F100 and F200 20 x 25/Lennox HCC20-28/General MAC2000/Trion 20 x 25 Air Bear/Ultravation 90-007