The USA 12 muffin pan has 12 standard sized wells; commercial grade and heavy gauge aluminized steel with a lifetime warranty. USA Pan baking pans feature Americoat which promotes quick release of baked-goods plus fast and easy clean up; wash with hot water, mild soap and gentle scrub brush or sponge. Made in the USA; each cup measures 2.75 x 2.13 x 1.38 inch. USA Pan is a Bundy family company which has proudly manufactured high quality bakeware and provided jobs in the USA for over 50 years.