Actual dimensions are 20.1 x 23.2 x 5. Accumulair brand: 21x23.5x5 Honeywell TRN2321T1 substitute whole house air filters, specifically built to replace the name brand Honeywell TRN2321T1 air filters. Completely built so no forming or combs needed. MERV rated to ASHRAE standards assuring particle filtration as good or better than the original brand Honeywell TRN2321T1 filter. Note: The example filter picture as shown is not true to size and is shown for style only. Brand names and Honeywell TRN2321T1 part numbers shown for filter substitution identification purposes.
Shipping and Returns
- Shipping is FREE to the contiguous United States.
- Our current lead times are 3-5 days for stocked standard filters, up to 3 weeks for non-standard and 0.5" filters, and up to 8 weeks for bag filters.
Delivery normally takes another 1-3 days depending on location.
- 30-day 100% return policy.
Payment & Security
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