Contractor shall furnish and install Anemostat AR-3 air diffusers as manufactured by Anemostat Products Division at each point indicated on the plans. These air diffusers are to consist of five or more expanding and diverging hollow cones with closed beads.

The cones shall be arranged to provide a minimum of five air paths, which shall simultaneously diffuse the air within the occupied zone within the limits of 20 to 50 fpm, and to aspirate room air within the passageway in a volume equal to 25 to 35 percent of the specified discharge volume.

The air diffuser shall be steel, painted arctic white.