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GRB3100 Roller Stand Block

Rooftop support block with 1” roller stand

G-STRUT’s 300 Series of rooftop support blocks features a weather-resistant roller stand secured to a pre-galvanized steel strut, allowing the support of pipe with longitudinal movement. Metal strut channel is compatible with standard fittings and clamps, while the heavy-duty rubber base dampens vibrations, protecting your roof. Let the team at Gregory Strut help you discover how the GRB300 series can support your project.

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Product Details

Give your rooftop pipes the freedom they need with the GRB3100. The GRB3100 base block includes a 1” roller stand that securely supports pipe, including insulated pipe, and allows for the movement necessary for these applications. The roller stand is mounted on 14-gauge steel strut channel and attached to the environmentally friendly base, which is compatible with most rooftop materials and is marked with green reflectors for safety and visibility.

  • Single base block with strut and roller stand
  • Pre-assembled at the factory
  • 14 gauge, 13/16” pre-galvanized steel channel
  • Compatible with standard strut channel fittings and clamps
  • 100% recycled rubber block
  • UV-resistant materials
  • Green high-visibility reflectors for safety
  • Innovative design inhibits floating and shifting
  • Freeze and thaw resistant
  • LEED certifiable product
  • Vibration dampening
  • Compatible with most rooftop materials


  • Base length: 9 3/4”
  • Base width: 5 1/2”
  • Base height: 4”
  • Height to top of strut: 4 13/16”
  • Channel width: 1 3/4”
  • Channel length: 9 1/2
  • Materials: 100% recycled rubber base, pre-galvanized steel channel
  • Safety: Green reflector for high visibility
  • Weight: 5-10 lbs
  • Static load capacity: 500 lbs.
  • Ordering: 300-400 per skid

Proven Certifications & Associations

Group Affiliations

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AD Plumbing Logo
AD Electrical
NetPlus Alliance

Have a question?
Contact our Vice President of Gregory Strut, Bob Porter, to discuss your questions, goals and project requirements.

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