Extron-electronics MR and MR D Series User Manual download pdf

This guide provides procedures for installing and modifying the Extron MR (standard) and MR D (Decora

) series plastic

mounting brackets (mud rings).

Mud Ring Components

Each mud ring kit includes an expansion

kit consisting of two small top/bottom

segments that allow the bracket to be

enlarged or reduced to the next larger or

smaller gang size. (See “Modifying a Mud

Ring,” on the next page.)

Figure 1 shows the parts of the

MR/MR D mud rings.

Installation

Determining the installation location

The UL-listed MR series mud rings do not need to be fastened to wall studs, so they can be placed almost anywhere on a

wall or other mounting surface. When you are deciding where to install the device and mud ring, consider the placement of

the cable(s) and access. You may need to install the cables before you install the bracket.

N The mud rings ﬁt properly in hollow wall thicknesses ranging from 1/4" (0.63 cm) to 1” (2.5 cm).

W The MR series mud rings are UL-listed for low-voltage applications only.

Preparing the site and installing the mud ring using the doglegs

1. See the to-scale cutout template included with the mud ring to determine the cutout dimensions for your mud ring.

Tear the cutout template along the perforations for the appropriate mud ring size.

2. Place the template against the surface to be cut, using a level, if necessary, to keep the template even. Trace around the

template.

3. Carefully cut away the mounting surface

material inside the traced template lines.

4. Test the ﬁt of the mud ring. The doglegs

should ﬁt easily into the hole and the ﬂat

portion should rest ﬂush against the wall.

See the note in ﬁgure 2, at right.

5. Rotate all doglegs inward.

6. Insert the mud ring into the hole.

7. Tighten all of the dogleg screws until

the doglegs clamp the mud ring to the

mounting surface. Do not overtighten.

Standard mud rings only: If you are going

to screw the mud ring to the surface, rather

than using the detachable doglegs, mark

the four surface mounting screw holes at

the corners of the mud ring. See ﬁgure 2, at

right.

Rotate doglegs

and insert mud

ring into wall

opening.

Extron

MR 200D

Modular Mud Ring

Surface Mounting

Hole

Dogleg

Screw

Equipment Mounting

Holes

NOTE Do not disassemble the dogleg

from the dogleg screw. Rotate the

dogleg out of the way to insert the

mud ring into the wall.

MR and MR D Series Installation Guide

Figure 2 — Installing an MR mud ring

Dogleg

Assembly

Side

Segment

Top/bottom

Segment

Assembly

Screw

Top/bottom

Segment

Surface Mount

Screw Hole

Device Mount

Screw Hole

Figure 1 — MR mud ring elements

68-1190-01 Rev. D

03 08

1 2

Summary of Contents

Page 1 - Installation

This guide provides procedures for installing and modifying the Extron MR (standard) and MR D (Decora®) series plastic mounting brackets (mud rings).

Page 2 - Part Numbers

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Extron-electronics MR and MR D Series User Manual

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