You might want more depth of you can accommodate it. I found this one on Amazon.

Hubbell-Raco 696 Masonry Boxes, 3-1/2 in. Deep - Nongangable with Conduit KO's, 2-Gang, 3-25/32 in. Wide https://www.amazon.com/dp/B0006HOWKG/ref=cm_sw_r_apan_i_3FQNTF241PJWYKQENTDK?_encoding=UTF8&psc=1

Front cover

Hubbell Wiring Systems 313292 SS701 302/304 Stainless Steel 1-Single Receptacle Wall Plate, 2 Gang, 2-31/64" Hole Diameter, 4-19/32" Width x 4-1/2" Height x 1/32" Thick https://www.amazon.com/dp/B002FYJ758/ref=cm_sw_r_apan_i_KRN7GPA6XP4NMKD4RFVD?_encoding=UTF8&psc=1