24x20x12 DuraMAX Rigid 4V FilterMERV 14, Koch 111-621-002 AI_Content_PEMS Use with Resilient Ring Diameter:

Use with Resilient Ring Diameter: 2

and the hex washer head is slotted for easy driving

Includes only one filter per purchase

Application: Suitable for 2500 Series baseboard heaters

Reversing Pneumatic Relay

24x20x12 DuraMAX Rigid 4V FilterMERV 14, Koch 111-621-002 AI_Content_PEMS Use with Resilient Ring Diameter:High Efficiency Minipleat Filter MERV 11 performance rating High efficiency microfiberglass or synthetic media Low pressure drop Reduced energy cost 194 square feet of media (24x24x12) Incinerable Light weight plastic, extremely rigid frame Superior dust holding and prolonged filter life The DuraMAX 4v is a rigid, extended surface air filter that is engineered to provide maximum performance and prolonged filter lifecycles, even in the most difficult