Aprilaire 1110 Filter 328140-751 Fail-Safe Reliability: Mechanical spring return

Fail-Safe Reliability: Mechanical spring return function provides guaranteed closure or opening upon loss of power

Optimized Airflow: Maintains the precise pressure drop needed to keep the centrifugal pressure switch closed during the heating cycle

Field technicians frequently specify the COL14716 for HVAC mode transition issues

preventing flow until power is applied to the 24Vac solenoid coil

avoiding corners or areas directly behind doors

Aprilaire 1110 Filter 328140-751 Fail-Safe Reliability: Mechanical spring returnThe Aprilaire 1110 Filter is a high performance whole house air purifier designed to significantly improve indoor air quality by capturing harmful particulates as they circulate through your HVAC system. Featuring a MERV 11 rating, this media air cleaner is engineered to trap up to 85% of pollen and mold spores, along with 50% of dust particles, which is a massive upgrade over standard 1 inch filters. Its 16x20 nominal size and heavy gauge galvanized