Common questions about return air filter grilles

What's the difference between a removable face and a hinged door?

A removable face lifts completely off for the fastest filter swap; a fixed-hinged door drops open and stays attached to the grille so you never set the face down. Both hold the filter at the grille so you change it at the wall instead of at the unit.

What filter size fits the grille?

These grilles take a standard 1-inch filter matched to the grille's duct opening size. Order the grille by duct opening and the matching 1-inch filter size drops right in.

How do I measure for a filter grille?

Measure the duct opening behind the wall or ceiling and order that size; the face overlaps the opening. The filter size follows the duct opening, so one measurement sizes both.

How often do I change the filter behind it?

Same as any pleated filter — roughly every 60–90 days. The whole point of a filter grille is that the swap takes seconds at the wall. Pair the grille with MERV 8, 11, or 13 packs in the same order.

Is bulk pricing available?

Yes — tiered pricing applies automatically, whether you need one for a home return or a case for a building. Ships same day on orders by 11AM ET from US stock.