Description

Flow Right 21 " Furnace Return Air Filter Box Furnace Stand Filter Rack Filter Door Having a clean air filter is important , so t his filter box makes it easy to replace your air filter , keep your home cleaner and your HVAC equipment work better and longer. These well-constructed furnace boxes are designed to fit gas furnaces. Raises Low Profile Furnace off the Groun d Easy Access to Filter for Service Description: Comes in a flat, easy to store carton and assembles in just minutes Improves airflow up to 20% and improves equipment efficiency Easily adjusts from 4" to 18" It May be used as a booster box without the filter door Description: Galvanized Cabinet Dimensions: 21-3/8" x 28" x 18"; Wt. Lbs.: 22;