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GRB3350 Roller Stand Block

Rooftop support block with 3.5” roller stand

Simple to install, safe for most roofing materials, and vibration-dampening, the G-STRUT GRB300 series of rooftop support blocks supports a wide variety of pipes while allowing for lengthwise freedom of movement. These blocks use roller stands, available in a range of sizes, which clamp securely to the steel strut channel attached. Contact the team at Gregory Strut to see how the GRB300 series can support your project.

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Product Details

The G-STRUT GRB3350 model uses a 3.5” roller stand, 100% recycled rubber base, and 14-gauge steel strut channel, making the entire unit weather-resistant and UV safe. Our base blocks are designed to avoid shifting and floating, too. Plus, high-visibility reflectors mark the location of each rubber base for safety.

  • 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 truck tire 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
  • 3.5” roller stand
  • 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 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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