3500-5821 IS OBSOLETE What you are buying is the parts that goes in the box!!! OBSOLETE No longer available, THIS IS PARTS ONLY BOX INCLUDES.replacement parts are as follows
40VA transformer (3300-3861), thermostat relay (PR360), 24V fan relay (PR380), system switch (3110-3321), fan switch (3110-3331). NO METAL BOX
