Ceiling Diffusers are made of extruded aluminum construction with multi-patterns, square or rectangular and with 1, 2, 3 and 4-way patterns. Ceiling diffuser is composed of flush mounted frame with spring loaded removable cores for easy installation. Supply ceiling diffuser is provided with opposed blade damper. It can also be provided with an equalizing grid as optional for proper air stream throw. Standard color finish is powder coating-RAL 9010 or RAL 9016. Other colors are available upon request.