21 x 26 x 5 Air Filters

This collection carries Tier1 replacements for the Trane and American Standard BAYFTAH26M 5-inch media filter in the 21x26x5 size, available in MERV 8 and MERV 11 and sold in 2-packs.

Trane and American Standard are sister brands under Trane Technologies, and their furnaces share the same filter cabinet design. That's why one filter fits either brand: if your cabinet takes the BAYFTAH26M, this is your replacement.

Choose MERV 8 for everyday dust and pollen with minimal airflow resistance, or MERV 11 to capture finer particles like pet dander and smoke. Most 5-inch media filters last 6–12 months.

Not sure which one fits your system? Call 1-800-277-3458.

Tier1 brand replacement for Trane BAYFTAH26M - 21 x 26 x 5 - MERV 11 (2-Pack)

$97.01

Tier1 brand replacement for Trane BAYFTAH26M - 21 x 26 x 5 - MERV 8 (2-Pack)

$80.67

Tier1 brand replacement for American Standard BAYFTAH26M - 21 x 26 x 5 - MERV 11

$72.83