The Faital Pro WG141 1.4″ Plane Wave Guide is an aluminium plane wave guide for use with compatible HF horn applications. It has a 36.5 mm (1.4 in) throat diameter and operates across a 0.8÷20 kHz frequency range. The recommended crossover frequency is 0.8 kHz, with 110° horizontal nominal coverage (-6dB). The guide measures 163 mm (6.4 in) high at the mouth, 130 mm (5.1 in) wide, and 200 mm (7.9 in) deep.