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RHD90 — Aluminum Return Air Grille, 90-degree Fixed Blade, OBD damper

How to Specify

Use the engineering data files to determine the proper size to use for maximum performance. Refer to the submittal drawing for key product dimensions.

How to Purchase

FAQs for GRDs

RHD90 — Aluminum Return Air Grille, 90-degree Fixed Blade, OBD damper

Assets/Details

Submittal Data (60 KB, PDF)
  • Extruded aluminum construction
  • Face bars permanently fixed into heavy aluminum frames at a 90-degree angle from face
  • Opposed-blade damper
  • Bright White or Satin Anodized finish
  • Available in ¼” increments, oversize options available
  • No longer available in 4” width (6x4 – 48x48 available)
  • Larger than 40x48 shipped in multiple pieces
  • Flat frame option standard, stocked where applicable
  • Damper depth is slightly greater (1/4"), where applicable
  • Available in special order Z-frame

    Add a "Z" to the beginning of the model number.

RHD90 — Aluminum Return Air Grille, 0-degree Fixed Blade, OBD damper - dimensional drawing

Available sizes (inches)

Height
Width681012141618202224262830323436384042444648
4
5
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48

Obsolete Product

  1. Old RHD90 Grille
HC RHD 90g
  • Extruded aluminum construction
  • Face bars permanently fixed into heavy aluminum frames at a 90-degree angle from face
  • Opposed-blade damper
  • Bright White or Satin Anodized finish