M Block Bracket for Connector Mounting

One Bracket, Four Different Jobs

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What's special about this jack/connector mounting bracket?

  • Open design to easily attachs M blocks and lays cable neatly
  • Can be used for: 25- and 50-pair M blocks, 89D 110 wiring bases, and QuickPort Patch Blocks
  • Mounting holes on top and bottom for quick mounting to a backboard
  • Click for More Features

Whether you need to mount M blocks, wiring bases or patch blocks, all you need is this one bracket. With mounting holes already in place, it's a cinch to install, and there’s enough room left underneath to feed your wires through neatly.


LE-40089-00D M Block Bracket for Jack/Connector Mounting Type 89D 10"H x 3-13/32"W x 1-1/2"D
  • Compact design is ideal for locations with limited space
  • For your convenience, the bracket is open at the top and bottom, so you can mount and install cable, then install the block easily at a later time


89D Bracket For QuickPort 12-Port Patch Block
View Specification Sheet - PDF


Part # Compatibility Dimensions Price

25-Pair M Blocks
50-Pair M Blocks
89D 110 Wiring Bases
QuickPort Patch Block

10"H x 3-13/32"W x 1-1/2"D


View 66 Clip Connecting Products Brochure - PDF


How to Install a 66 Connecting Block
How to install a 110 Block



M Block, 25-Pair
M Block: 25-Pair
This 66 Connecting Block enables you to quickly interconnect phone lines and communication cable. Simply place the unstripped wire on the 66 Connecting Block clip and press down with a punch down tool (sold separately). The tool automatically puts wire in place and trims off any excess.
Leviton Split M Block
Split M Block: 50-Pair
The Split M block contains 50 rows of clips, but instead of one 4-slot clip as the 25 pair M Block, each row contains two separate 2-slot clips.
M Block with Female Connector
M Block with Female Connector
The 50-pair M block contains prewired, pretested 25-pair female connector on the left side fanning strip to hasten the connection of incoming pairs.

High-impact, fire-retardant UL 94V-0 plastic construction

Leviton M Block with Female & Male Connectors
M Block with Female & Male Connectors

The 50-pair M block contains prewired, pretested 25-pair female connector on left and male connector on the right for the quickest installation.
Easily plug in the connectors and insert bridging clips to complete the connections.

Bridging Clips
Bridging Clips
Price per pack
Bridging clips press onto the two center slots in any row of a Split M block. If outside cable pairs are terminated on the left-hand clips and station equipment wire is terminated on the right-hand clips, then connections can quickly be made or eliminated by simply inserting or removing the bridging clips.

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