The Johnson Controls A19AAB-4 is a professional-grade mechanical temperature control designed for heavy-duty HVACR applications requiring high-precision single-stage temperature control

this genuine OEM pressure switch ensures your equipment maintains proper combustion air proving and flue monitoring

as well as obsolete part numbers GKT20050 and GKT20050K

5 inches in width

Browning AX82 Belt 321042-401 The Johnson Controls A19AAB-4 isThe Browning AX82 Belt is a heavy duty notched V belt engineered for demanding HVACR applications requiring high torque transmission and tight diameter sheaves. Featuring a 84. 2" outside diameter and a classic A section profile, this Gripnotch belt utilizes a raw edge construction that increases feline to sheave friction while minimizing heat buildup during continuous operation. The precision molded cogs allow for better flexibility around smaller