Packard transformers will replace models with equal or lower VA rating. Multi-Mount Transformers, 4 1/4" X 4 1/4" mounting plate included. 1/2" conduit hub for electrical knockout mounting. Class II Transformers. Brand: Packard, Connection Type: Wire Lead/Term, Country of Origin: CHINA, Includes: 4 1/4" x 4 1/4" mounting plate included, Input Voltage: 120, Mounting Option: Plate, Primary Voltage: 120, Secondary Rating: 24, Transformer Mounting Option: Plate, UPC: 840899101101, VA Rating: 40VA, Voltage: 120