North American Product OnlyA compact, 200mm (8.00") down firing ceiling subwoofer designed for installation directly into the 1 x 2 drop grid of a standard suspended ceiling. Mounted in a vented cabinet, this subwoofer is capable of delivering 43Hz at -3dB. Comes complete with a passive input module connected via a barrier strip, but must be used in conjunction with an active crossover. NFPA (grade A) fire rating applies and is supplied with a standard air conditioning style perforated grille for architectural integrity.