Anemostat Model IJ “InfiniJet” Drum Louver shall be furnished and installed where shown on the plans. The drum louver shall provide means for directional control of the supply air in both the horizontal and vertical planes. Horizontal control shall be adjustable up to a 30 degree spread angle, utilizing individually adjustable vanes. The ratio of blade depth to blade spacing shall be greater than 1. Directional control in the vertical plane shall be adjustable plus or minus 30 degrees from horizontal, by rotating the drum about its central axis.

The drum louver shall be constructed of aluminum extrusions. The drum assembly shall rotate on pivots at each end of the drum. Both horizontal and vertical discharge directions shall be independently adjustable. The mounting frame shall include gasketing around the perimeter to prevent leaks and smudging between the mounting surfaces and the frame. The supply outlet shall also include seals between the rotatable drum assembly and the mounting frame to prevent leaks.

Provide optional opposed blade volume damper, as indicated, integral with the drum assembly. The volume damper shall not limit the drum rotation through the full 60 degree angular travel.

The finish shall be baked-on Arctic white paint, or custom color paint as scheduled.