When your HVAC system calls for a 37-3/4 x 23-5/8 x 1 filter and the standard aisle doesn’t carry it, this Exact Filters unit is cut to your exact 37-3/4 x 23-5/8 x 1 spec no shims, no gaps, no bypass air.
A properly fitting filter seals against the housing, so all return air is forced through the media instead of leaking around the frame.
At MERV 13, this filter removes a significantly larger share of fine particulate from your return air than standard mid-efficiency ratings including smoke, bacteria-sized particles, and the fine dust that tends to resettle faster after cleaning. Because the media is denser, a properly sized HVAC system matters: check your blower’s static-pressure headroom before upgrading.
Specifications
- Nominal size: 37-3/4 x 23-5/8 x 1
- Actual dimensions: 37-3/4 x 23-5/8 x 3/4
- Efficiency rating: MERV 13
- Quantity: 12 filters per carton
This 37-3/4 x 23-5/8 x 1 filter size is frequently ordered by homeowners with older systems, property managers handling mixed-vintage HVAC equipment, and facilities maintenance teams servicing buildings where no two return grilles seem to measure the same.
Features
- Replace approximately every 90 days in standard installations; shorter intervals in high-dust, smoky, or heavy-use environments
- Orientation arrow printed on the frame to ensure correct airflow direction at install
- Suitable for forced-air furnaces, central AC, heat pumps, and packaged HVAC systems
- Made to your exact 37-3/4 x 23-5/8 x 1 specification no trimming or taping required at installation
Same 37-3/4 x 23-5/8 x 1 size, different efficiency rating
| MERV 1-4Basic dust-stop | MERV 8Standard efficiency | MERV 11Enhanced efficiency |
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Need 37-3/4 x 23-5/8 x 2 or another depth? This size is available in other depths we don’t stock online reach out and our team will quote it for you, typically same business day.
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