White-Rodgers FR1000M-111 Filters Els PW 17895 The heavy-duty aluminum construction provides

The heavy-duty aluminum construction provides the necessary rigidity to prevent blade flex and vibration during high-ambient operation

making it suitable for modern high-pressure refrigerant environments

or rigid plastic

Can I use a universal adjustable switch instead

19" PF rating mean for this switch

White-Rodgers FR1000M-111 Filters Els PW 17895 The heavy-duty aluminum construction providesFor service professionals maintaining residential and light commercial forced air systems, the White Rodgers FR1000M 111 serves as a high performance 16x20x4 media filter designed for the ACM1000M media air cleaner. This 3 pack of MERV 11 air filters is engineered to sustain a nominal 1000 CFM airflow, ensuring minimal static pressure drop while protecting the evaporator coil and blower motor from particulate accumulation. The electrostatically