HRB 109 and HRU 109 • Installation Guide
The Extron HRB 109 basic shelf and Extron HRU 109 shelf kit accommodate half-rack,
quarter-rack, and eighth-rack products in a half-rack width installation. The shelves can
accommodate a single device or combinations of smaller devices.
This installation guide describes how to
z
Secure A/V products to the shelf.
z
Secure a false front panel to the shelf (HRU 109 only).
z
Secure the shelf to the rack rails.
Before Starting
Extron does not provide rails for the rack system. These must be purchased separately and
need to be installed (see the user guide provided by the supplier). The distance between
the rails must be half the standard rack width (8.85 inches or 22.48 cm) between the inside
edges of the rails (see the figure below).
9.5"
10.5"
8.85"
1.75"
Figure 1.
Dimensions
You will also need a Phillips head screwdriver.
Included Parts
HRB 109 (Basic Shelf)
Half-rack shelf: 9.5 inches (24.1 cm) deep x 10.5 inches (26.7 cm) wide
(width not including mounting flanges 8.85 inches [22.5 cm])
(4) #10-32 rack shelf mounting screw with nylon captive cap washer
(8) #4-40 x 3/16 inch product mounting screw
HRU 109 (Shelf Kit)
Half-rack shelf: 9.5 inches (24.1 cm) deep x 10.5 inches (26.7 cm) wide
(width not including mounting flanges 8.85 inches [22.5 cm])
(4) #10-32 rack shelf mounting screw with nylon captive cap washer
(8) #4-40 x 3/16 inch product mounting screw
1/4-rack false faceplate
1/8-rack false faceplate
1
