Actual Dimension: 23.5 x 27.5 x 1.75. Filter Hut's Accumulair 24x28x2 Geothermal air filters are two-piece frame, one panel 23.5 x 27.5 x 1.75 filters for Geothermal or Ground Source Heat Pump (GSHP) units. The one-piece design of the 24x28x2 Geothermal filter makes a more robust filter and eliminates bypass opportunity. One-panel, two-piece construction. Standardized to ASHRAE classifications. Notice: The example filter image shown is not to scale and is included to show construction purposes. Database and 24x28x2 geothermal air filter specs are up to date as of 03/25/2020.
Shipping and Returns
- Shipping is FREE to the contiguous United States.
- Our current lead times are 3-5 business days for stocked filters (standard 1"-5" thick sizes), up to 3 weeks for made-to-order filters (non-standard and 0.5" sizes), and up to 8 weeks for bag filters.
Delivery normally takes another few days depending on location.
- 30-day 100% return policy.
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