Diffuser modular false ceiling mounted 24 “x 24″. Perforated steel sheet in front, with 50% free area Which is easily removable to facilitate the maintenance process. Distribution box + high efficiency. Circular+Neck flexible duct connection. Fiberglass insulation with kraft coated. MATERIALS: Perforated sheet steel hinged gauge 26 (24 option), with box-reinforced steel adapter gauge 26. Necks rolled and stamped, galvanized metal lime. 26. The insulation is fiberglass, 1-1/2 “thick R = 4.2 FINISH: Baked electrostatic paint (polyester) white Vermont airtight steel and plastic packaging. Comparable to Titus Diffusers and Grilles