Actual size is 20.1 x 23.2 x 5. Accumulair brand 21x23.5x5 Trane TFM235B0AH0 substitute whole house air filters, exactly engineered to be an alternative to the original brand Trane TFM235B0AH0 air filters. Fully box-formed - no assembly or combs required. MERV rated to ASHRAE specs establishing filtration to the level of the OEM Trane TFM235B0AH0 filter. Note: The example air filter picture shown is not true to size and is included to show construction only. Trade names and Trane TFM235B0AH0 P/N shown for air filter replacement purposes.
Shipping and Returns
- Lead times vary and are listed at the top of the website. Non-standard sizes (custom, 0.5" thick, etc) take 3-4 weeks for delivery.
- Shipping is FREE to the contiguous United States.
- 30-day 100% return policy.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.