These are Princeton Reverb style baffles. Dimensions are (H) 13-1/2" x (W) 18-5/16" x (D) 3/4". Speaker cutout 12".These are built to Vintage Sound Amps, specs with a full 3/4" thick baffle and T-nuts for speaker mounting, not Studs. Comes with mounting screws. Great for Extension cab baffle as well.  I have 4 available in the following Grill cloth. 2 - Black & Tan, 1- Salt & Pepper, and 1 - Beige-Brown-Gold.