2 Pack Procraft LH515 5-1/8" H x 15.25" W x6" D horn flare/lens. 1-3/8"-18 TPI threads, 1" throat, 90 x 40 coverage, Lightweight ABS construction. Cutout is 13.625" x 3-5/8". Great quality at a great price. Very sturdy, great for pro sound. Use the LHW-2 for bolt-on drivers.