Procraft LH909A 9.375" H x 9.375" W x 8.0" D horn flare/lens. 1-3/8"-18 TPI threads, 1" throat, 90 x 75 coverage, Lightweight ABS construction. Cutout is 8" x 8". Great quality at a great price! Very sturdy, great for pro sound. Use the LHW-2 for bolt-on drivers.