Model ECO Supply Grilles
Architect’s Choice – Typical Specification
(48" Maximum Width)

Spiral duct supply grilles shall be Anemostat Model ECO20H as scheduled and shown on the plans. The supply grilles shall be designed for direct attachment to exposed round or oval ducts without the use of transitions or saddles. 

Grilles shall be double deflection type with horizontal front blades and rear vertical blades. Grille design shall include front blades located as to follow the arc or radius of the duct in which it is installed. Flat blade cores are not acceptable. Rear vertical blades shall provide a straightening effect and allow for adjustable air spread control. Grilles shall include an outer frame specifically formed and rolled for the installed duct diameter and shall include factory applied gaskets. Grilles shall be constructed of steel or aluminum materials as scheduled. Blades (3/4" centers) shall be individually adjustable and designed to minimize noise and pressure loss, and shall consist of either an extruded aluminum or roll formed, closed profile. Blades shall rotate smoothly without bending and include a friction design to hold blade position, and prevent rattling. Frame mounting holes shall be countersunk for oval head screws, provided by the grille manufacturer. Where scheduled, provide optional factory installed diverter-damper for air volume control. Diverter-damper shall be face operated using 5/32" hex key.

Finish shall be baked-on Anemostat Arctic White or custom color as specified by the Architect. 

Model ECO Supply Grilles
Typical Specification

Spiral duct supply grilles shall be Anemostat Model ECO as scheduled and shown on the plans. The supply grilles shall be designed for direct attachment to exposed round or oval ducts without the use of transitions or saddles. 

Grilles shall be single deflection (Model ECO10) or double deflection type (Model ECO20), and shall include an outer frame specifically formed and rolled for the installed duct diameter with face directional blades horizontal or vertical as detailed. Frame shall include factory applied gaskets. Grilles shall be constructed of steel or aluminum materials as scheduled. Blades (3/4" centers) shall be individually adjustable and designed to minimize noise and pressure loss, and shall consist of either an extruded aluminum or roll formed, closed profile. Blades shall rotate smoothly without bending and include a friction design to hold blade position, and prevent rattling. Frame mounting holes shall be countersunk for oval head screws, provided by the grille manufacturer. Where scheduled, provide optional factory installed diverter-damper for air volume control. Diverter-damper shall be face operated using 5/32" hex key.

Perforated return grilles shall be Anemostat Model ECO-P as scheduled and shown on the plans, and shall match supply grilles in construction and appearance. Grilles shall include frame mounting holes and gaskets. Perforations shall have a pattern of 3/16” diameter holes on 1/4" staggered centers with 50% free area. Provide factory attached opposed blade volume control dampers as required.

Finish shall be baked-on Anemostat Arctic White or custom color as specified by the Architect.