Steel, Adjustable, high performance three cone diffuser The TMS is a square ceiling diffuser that delivers supply air in a true 360º pattern with low pressure drop. The uniform, nearly horizontal jet from the outer cone maintains effective room air distribution even when the air volume varies over a considerable range. All sizes have three cones, giving a uniform appearance where different neck sizes are used in the same area.

Steel Single Deflection Return Grille with ¾” blade spacing, 35° fixed deflection, Blades parallel to the long dimension

Model ABD is an automatic balancing damper designed to maintain a constant airflow volume in HVAC applications. The damper blade is calibrated to automatically adjust to changing pressures. The ABD is for use in both supply and exhaust applications.