(4 PACK) PROCRAFT LH337A 4″ x 11″ Horn Lens for 1″ Screw-on Driver 90 X 40 Degre
1-3/8"-18 TPI threads, 1" throat, 90 x 40 coverage, Lightweight ABS construction. Cutout is 9-3/4" x 2-7/8". Great quality at a great price. Very sturdy, great for pro sound. Use the LHW-2 for bolt-on drivers.