Finally, here's a 5F4 style chassis builders can actually afford. Measures 18 1/2" long, 2 5/8" deep, 4 1/8" tall. Punched for a single rectifier tube, two 6L6GC power tubes and three preamp tubes. Power transformer opening 3 1/8" X 2 33/64". As on the other chassis we import from China the metal finishing is far from perfect. All of 'em show some fine scratches under the chrome plating.