Description
When your HVAC system calls for a 38-1/4 x 29-1/4 x 1″ filter and the standard aisle doesn’t carry it, this Exact Filters® unit is cut to your exact 38-1/4 x 29-1/4 x 1″ spec — no shims, no gaps, no bypass air.
Even a quarter-inch of gap around a filter can allow a significant percentage of return air to bypass the media entirely, which is why the exact fit matters as much as the filter’s efficiency rating.
MERV 13 targets the fine particulate fraction that lower MERV ratings allow through — including smoke, bacteria-carrying dust, and combustion byproducts. Airflow resistance is higher than MERV 8 or 11, so systems with borderline static pressure should be evaluated before switching up.
Specifications
- Nominal size: 38-1/4 x 29-1/4 x 1″
- Actual dimensions: 38-1/4 x 29-1/4 x 3/4″
- Efficiency rating: MERV 13
- Quantity: 12 filters per carton
The 38-1/4 x 29-1/4 x 1″ dimension is one of the many non-standard sizes we make on demand, serving both retrofit installations in older homes and light-commercial properties where the return housing dates to an older era of HVAC construction.
Features
- Made to your exact 38-1/4 x 29-1/4 x 1″ specification — no trimming or taping required at installation
- Pleated construction (or fiberglass, depending on MERV tier) designed for balanced capture and airflow
- Replace approximately every 90 days in standard installations; shorter intervals in high-dust, smoky, or heavy-use environments
- Suitable for forced-air furnaces, central AC, heat pumps, and packaged HVAC systems
Same 38-1/4 x 29-1/4 x 1″ size, different efficiency rating
| MERV 1-4Basic dust-stop | MERV 8Standard efficiency | MERV 11Enhanced efficiency |
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Need 38-1/4 x 29-1/4 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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