29-5/8″ x 21-1/8″ x 1″ MERV 13 Pleated Furnace Filter – 12-Pack

Description

Exact Filters® produces this 29-5/8 x 21-1/8 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 29-5/8 x 21-1/8 x 1″ slot the first time.

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.

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: 29-5/8 x 21-1/8 x 1″
• Actual dimensions: 29-5/8 x 21-1/8 x 3/4″
• Efficiency rating: MERV 13
• Quantity: 12 filters per carton

Customers typically order a 29-5/8 x 21-1/8 x 1″ custom filter because their system is older, was built by a regional manufacturer, was retrofitted, or was framed on-site by an installer who didn’t conform to a standard filter dimension. If that describes your situation, you’re in the right place.

Features

• 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
• Replace approximately every 90 days in standard installations; shorter intervals in high-dust, smoky, or heavy-use environments

Same 29-5/8 x 21-1/8 x 1″ size, different efficiency rating

Explore more from our collection.