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#1 Source in low voltage wire and cable. Call us today to learn more about special offers.
#1 Source in low voltage wire and cable. Call us today to learn more about special offers.

66 Block Metal Backboard - Full, Half and Quarter Sizes - Available in 7 Colors

by Dynacom
SKU: PP7-6171-QBL
Color: Blue
Various lead times may apply to this product. Please contact us for more details.

Note: Images are for size reference only. Color of the board will be the color you choose.


66 Block Metal Backboard, Full, Half and Quarter Sizes

Dynacom's 66 Block Metal Backboards are used to mount 66 punchdown style wiring blocks to a wall. Once the wiring block has been mounted to the 89B brackets on the backboard, the backboard is able to be hung in the location of choice. These backboards are available in 3 different configurations: quarter, half, and full size. The full size backboard is capable of securing up to four 66 punchdown wiring blocks; while the half size supports two wiring blocks and the quarter size can support one wiring block. The backboards are available in 7 colors in any size configuration.

Additional Related Items

To complete your network we have all the products you need, with full end to end solutions for Telco voice systems. We carry a wide array of Punch Down Wiring Blocks, Backboard Brackets, and CAT3 Cable.

If you are looking to quickly and easily install your CAT3 network or voice system, we have Pre-Wired Punchdown Blocks, Pre-Loaded Surface Mount Boxes, and Ethernet Splitters.

We also carry Telco tools and equipment for testing the integrity of a CAT3 network such as Telephone Line Testers, Punch Down Termination Tools and Professional Tool Kits.

We also carry a large assortment of items that work with Telco voice systems such as: Amphenol cables, Bridge Clips, Connecting Blocks, Modular Cable, and other accessories that will help make your installation fast, smooth and organized. If you have any questions or can't find what you need, feel free to give us a call.



  • Available in Full, Half and Quarter Sizes
  • 20 Gauge Steel Backboard
  • Powder Coat Finish
  • 89B Bracket Type
  • All inside bend radius are 0.09 inches max
  • Close corners, bend as sharp as possible
  • Backboards are available in 7 different colors



Part Number PP7-1588-HBL PP7-6170-FBL PP7-6171-QBL
Configuration Half Size Full Size Quarter Size
Capacity 4 Wiring Blocks 8 Wiring Blocks 2 Wiring Blocks
Height 8.5 inches 17 inches 8.5 inches
Width 20 inches 20 inches 10 inches
Depth 0.5 inch Backboard, w/ 2 inch Block attachment 0.5 inch Backboard, w/ 2 inch Block attachment 0.5 inch Backboard, w/ 2 inch Block attachment
Package Quantities Sold in boxes of 8 (Minimum Quantity Order is 4) Sold in boxes of 4 (Minimum Quantity Order is 3) Sold in boxes of 16 (Minimum Quantity Order is 3)

Additional Information

Telco Block Accessories

Telco blocks are utilized to connect phone systems to data networks. There are two popular forms of telco blocks: the 66 block and the 110 block. The 66 block is quite common in modern phone systems, as they simplify connecting multiple phone lines. The 66 block is also referred to as B-blocks, M-blocks, and as split-50 blocks. We also have Cable Distribution Spools, or mushroom posts for managing your cross connect wire. It is designed for mounting onto walls or other surfaces to help support and guide your cross connect wire. Our cable distribution spools are also ideal for Cat3 cable for telephone applications.

To learn more about our Telco Block Accessories please visit our overview page. Our 66 Block Metal Backboards can be combined with a wide array of products such as:

What’s In The Box

What’s In The Box

  • Qty 1 - 66 Block Metal Backboard
  • Qty 2 - Wiring Blocks
  • Qty 1 - 66 Block Metal Backboard
  • Qty 4 - Wiring Blocks
  • Qty 1 - 66 Block Metal Backboard
  • Qty 8 - Wiring Blocks