This is a full case of 24 packages.

Each package has enough for 7 outlets and 3 switches

Install now as you build or remodel

Each piece is 2-1/2″ wide by 4″ high

Package part #OS12 with UPC 0 77578 03825 4

Made in USA

Case of 24 opens for retail display

By Thermwell Products. Full case scan code is 30077578038255

ELECTRIC OUTLET & SWITCH SEALERS. Made of a UL–listed fire retardant plastic foam, they are pre–stamped to fit precisely. Installed easily behind the faceplate, they are completely invisible.

About $20 per case wholesale to suppliers like Lowes