it is the direct replacement for specific Bryant and Payne rooftop units and air handlers that call for the 12-12BD wheel configuration

and Payne package units and air handlers without the need for mounting bracket modifications

which leads to standing water

signifying the critical cutout point necessary to prevent heat exchanger damage or unsafe operating conditions

soot buildup in the flue

Trane ORF1406 Orifice 319847-401 it is the direct replacementNat Burner Orifice Trane ORF1406 Natural Gas Burner Orifice Genuine OEM Replacement Ensure reliable gas flow and optimal burner performance with the Trane ORF1406 Orifice, a genuine OEM natural gas burner orifice designed specifically for Trane heating systems. Also known as ORF01406, this precision engineered component regulates gas flow to maintain efficient combustion and safe operation. Key Features: OEM Part Number: ORF1406 (also listed as