20-1/4x28-3/4x1 Exact Filters Pleated MERV 8 (12 pack)

This air filter is made to a 20-1/4 x 28-3/4 x 1″ nominal size for HVAC systems, air handlers, and return grilles that require an exact custom dimension rather than a standard retail size. A properly fitting filter seals against the housing, so all return air is forced through the media instead of leaking around the frame. The MERV 8 rating is the broad "good enough for most installations" tier: better than fiberglass, noticeably less restrictive than MERV 11 or 13, and well-matched to standard single-stage and two-stage HVAC equipment in both homes and light-commercial spaces. Specifications Nominal size: 20-1/4 x 28-3/4 x 1″ Actual dimensions: 20-1/4 x 28-3/4 x 3/4″ Efficiency rating: MERV 8 Quantity: 12 filters per carton Common applications for a 20-1/4 x 28-3/4 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 Made to your exact 20-1/4 x 28-3/4 x 1″ specification — no trimming or taping required at installation Sold as a 12-pack so you have a full year of replacements on hand Pleated construction (or fiberglass, depending on MERV tier) designed for balanced capture and airflow Cardboard frame with reinforced media for structural stability during handling and installation Same 20-1/4 x 28-3/4 x 1″ size, different efficiency rating MERV 1-4Basic dust-stop MERV 11Enhanced efficiency MERV 13Highest efficiency Need 20-1/4 x 28-3/4 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. Call 866-469-8556 Contact us for a quote