4 pack Procraft LH612 5.875" H x 12.5" W x 8.375" D Horn flare/lens. 1-3/8"-18 TPI threads, 1" throat, 90 x 50 coverage, Lightweight ABS construction. Cutout is 10" x 4.5". Great quality at a great price, flange is 5/16" thick! Very sturdy, great for pro sound. Use the LHW-2 for bolt-on drivers.