Series XG-RH – Specifications
Fixed Horizontal Blade Aluminum Return Grille
XG-RH-1 – Surface Mount
XG-RH-6 – T-bar Lay-in
XG-RH-8 – Tegular T-bar
XG-RH-9 – Donn Fineline Lay-in

Air Inlets shall be model XG-RH manufactured by GREENHECK. Units shall be return or exhaust grilles of aluminum construction and with an extruded aluminum border and a single set of fixed deflection blades. The units shall be the size and quantity as outlined in the plans and specifications.  Border shall be 1 1/4" wide with aerodynamically shaped deflector blades on .666" centers set at 40°. Units shall be designed to integrate into the specified ceiling system.

Hinged/Removable Face (Optional) 
Units with RC-1, RC-6, H-1 or XG-H-6 frames shall include a hinged/removable face allowing access to concealed equipment. The units shall be the size and quantity as outlined in the plans and specifications.

XG-RH-H-1 – Surface Mounted with hinged face
XG-RH-H-6 – Lay-In with hinged face
XG-RH-RC-1 – Surface Mounted with removable core
XG-RH-RC-6 – Lay-In with removable core

Air Inlets shall be model XG-RH-H / XG-RH-RC manufactured by GREENHECK. Units shall be return or exhaust grilles constructed of aluminum. The units shall be the size and quantity as outlined in the plans and specifications.

Border shall be 1 1/4" wide with aerodynamically shaped fixed deflector blades on .666" centers set at 45°. Units shall be designed for surface mounting applications and be provided with screw holes on the face of the device.

Series XG-RHE - Specifications – Extruded Aluminum
Fixed Horizontal Blade Extruded Aluminum Return Grille
XG-RHE-1 – Surface Mounted
XG-RHE-6 – T-Bar Lay-In
XG-RHE-9 – Donn Fineline Lay-In

Air Inlets shall be model XG-RHE manufactured by GREENHECK. Units shall be return or exhaust grilles constructed of heavy extruded aluminum. The units shall be the size and quantity as outlined in the plans and specifications. Border shall be 1 1/4" wide with aerodynamically shaped deflector blades on .666" centers set at 40°. 

Hinged Face (Optional)
Units (model XG-RHE-H-1) shall include a hinged face allowing access to concealed equipment. The units shall be the size and quantity as outlined in the plans and specifications.

XG-RHE-H-1 – Surface Mounted with hinged face

Air Inlets shall be model XG-RHE-H-1 manufactured by GREENHECK. Units shall be return or exhaust grilles constructed of heavy extruded aluminum. The units shall be the size and quantity as outlined in the plans and specifications.

Border shall be 1 1/4" wide with aerodynamically shaped fixed deflector blades on .666" centers set at 45°. Units shall be designed for surface mounting applications and be provided with screw holes on the face of the device.

Series XG-SRH - Specifications – Steel
Fixed Horizontal Blade Steel Return Grille
XG-SRH-1 – Surface Mounted
XG-SRH-6 – T-Bar Lay-In
XG-SRH-9 – Donn Fineline Lay-In

Air Inlets shall be model XG-SRH manufactured by GREENHECK. Units shall be return or exhaust grilles constructed of heavy extruded aluminum. The units shall be the size and quantity as outlined in the plans and specifications. Border shall be 1 1/4" wide with aerodynamically shaped deflector blades on .666" centers set at 40°. 

Hinged Face (Optional)
Units (model XG-SRH-H-1) shall include a hinged face allowing access to concealed equipment. The units shall be the size and quantity as outlined in the plans and specifications.

XG-SRH-H-1 – Surface Mounted with hinged face

Air Inlets shall be model XG-SRH-H-1 manufactured by GREENHECK. Units shall be return or exhaust grilles constructed of heavy extruded aluminum. The units shall be the size and quantity as outlined in the plans and specifications.

Border shall be 1 1/4" wide with aerodynamically shaped fixed deflector blades on .666" centers set at 45°. Units shall be designed for surface mounting applications and be provided with screw holes on the face of the device.

For Surface mounting:
Units shall be designed for surface mounting applications and be provided with counter sunk screw holes on the face of the device.

For T-Bar Lay-in:
Units shall be designed to integrate into the specified ceiling system. 

Damper Accessories (Optional)
Optional opposed blade damper shall be constructed of steel (model XG-OBD) or aluminum (model XG-OBDA). Damper must be operable from the face of the diffuser.

Performance Specification
The manufacturer shall provide published performance data. Data shall be tested in accordance to ANSI/ASHRAE Standard 70- 2006

Paint Specification
Process shall be anodic electrodeposition using an anodic acrylic paint. Units shall undergo pre‐ treatment including a pressurized spray stage using an alkaline cleaner and a de‐ionized water rinse.