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Underground Devices’ Bore Spacer

Underground Devices’ Bore Spacer

Manufacturer: Underground Devices

Underground Devices’ BS4079W8 bore spacer is a double wall, hybrid type. Design features include eight wheels, provision for grout injection pipes and optional banding saddles. 

Product Tag:
  • Bore Spacer
Appears In: Electrical Contractor February 2026

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    Underground Devices’ BS3106 is a double-wall, spider-type bore spacer. The injection method is a single end or stationary sacrificial grout injection pipe. Fasteners secure the two halves of the spacer together, and users can place one spacer for every 5 feet of duct bank.

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    Underground Devices’ BS3934W2 is a full complement bore spacer. One spacer can be used for every 5 feet of duct band. The perimeter of the bore spacer is scalloped for maximum grout flow area. It includes two wheels and cable holes to prevent corkscrew. 

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