The GeneralAire 4038 is the correct replacement separator assembly for the following air cleaner models:
The GeneralAire 12751 Separator Assembly for Model AC1 is a replacement separator assembly for the GeneralAire Model AC1 air cleaner. The 12751 separates the 12754 side frame assembly from the 12758 MERV 11 air cleaner media. This GeneralAire replacement part is made from high quality construction material and is intended to be very long lasting.
GeneralAire 12751 Separator Assembly for Model AC1 specifications: