the 50002883-001 includes the necessary bracket and screws to mount the plate and thermostat directly to a standard junction box

As a veteran tech knows

the GB-A (0881425) and GB-B (0881426) kits have different dimensions

This OEM replacement part is the direct successor to legacy part number 1172110 and has been superseded in some catalogs by 1186257

facilitating streamlined installations in commercial and industrial HVACR environments

Copeland Comfort Control (White Rodgers) 90-384 Relay the 50002883-001 includes the necessaryThe Copeland Comfort Control (White Rodgers) 90 384 relay is a dependable switching component designed for HVAC systems requiring precise control of high voltage circuits. This 208 240V relay features single pole normally open and normally closed contacts, making it suitable for a range of control applications including compressors, fan motors, and auxiliary equipment. Built to handle demanding electrical loads, this SPNO SPNC relay provides