Exact Filters produces this 36-3/4 x 39 x 1 filter to your measurements, so instead of trimming, taping, or forcing a “close enough” size into place, you drop in a filter that fits your 36-3/4 x 39 x 1 slot the first time.
Filter bypass air slipping past a loose frame instead of through the pleats is one of the most common reasons a filter underperforms its MERV rating in the real world. A precise fit closes that gap.
This MERV 13 pleated filter is the highest-efficiency option we produce in the Exact Filters custom-size line. It’s commonly chosen by allergy-sensitive households, buildings in wildfire-smoke regions, healthcare and education facilities, and anyone wanting the deepest particulate capture we offer.
Specifications
- Nominal size: 36-3/4 x 39 x 1
- Actual dimensions: 36-3/4 x 39 x 3/4
- Efficiency rating: MERV 13
- Quantity: 12 filters per carton
Common applications for a 36-3/4 x 39 x 1 custom filter include retrofit installations, legacy HVAC systems installed before standard sizes were codified, built-in return grilles that were framed to non-standard dimensions, and commercial unit housings that don’t match any current off-the-shelf size.
Features
- Suitable for forced-air furnaces, central AC, heat pumps, and packaged HVAC systems
- Orientation arrow printed on the frame to ensure correct airflow direction at install
- Replace approximately every 90 days in standard installations; shorter intervals in high-dust, smoky, or heavy-use environments
- Cardboard frame with reinforced media for structural stability during handling and installation
Same 36-3/4 x 39 x 1 size, different efficiency rating
| MERV 1-4Basic dust-stop | MERV 8Standard efficiency | MERV 11Enhanced efficiency |
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Need 36-3/4 x 39 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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