Beefed-Up Replacement MERV 12 Air Filter For 20x20x5 Size (Actual 19 5/8 x 19 7/8 x 4 3/8), Fits Honeywell And Lennox, 1 Pack, Easy Install, Tight Seal, Great Air Quality For Your Furnace And AC

MERV 12 20x20x5 Replacement Air Filter for Honeywell Systems
✔️ Actual size 19 5/8 x 19 7/8 x 4 3/8 MERV 12 single air filter

This handy filter fits into standard furnace and AC units to trap dust and allergens while keeping air moving smoothly through your home system.

✅ Heavy duty moisture resistant frame with metal mesh support
✅ MERV 12 rating matches MPR 1500 to 1900 levels
✅ Blocks bacteria and mold for cleaner indoor air
✅ Made in USA for high efficiency heating and cooling

💡 Why does filter depth matter when swapping furnace air filters? Most HVAC systems expect a precise fit to avoid air leaks. - Measure the old filter before buying to match the exact depth listed. - A 4 3/8 inch actual depth keeps the unit sealed and running quiet. - Deeper or shallower filters can reduce airflow and raise energy costs over time.