MIRO 3-RAH-8Protect Your Roof.
Support Your Pipes.
The 3-RAH-8 absorbs thermal expansion and contraction so your pipes move freely without damaging your roof membrane. Non-penetrating, adjustable, and built to last.
Why Contractors Choose the 3-RAH-8
Engineered for real-world rooftop conditions and fast installation.
Non-Penetrating Design
Sits securely on the roof membrane without screws or fasteners. No holes to void warranties or create leak points.
Thermal Expansion Roller
Self-lubricating polycarbonate roller lets pipes expand and contract freely, preventing stress on the membrane and piping.
Built to Last
UV-stable polycarbonate base won't crack, dry out, or crumble like rubber or foam. Backed by a 20-year warranty.
Adjustable Height
Easily adjust from 3⅞" to 8" using standard tools. Set the right elevation to match grade and distribute load evenly.
Fast Installation
No special tools or drilling required. Place, adjust height, and set the pipe. Ships 12 per case at 21 lbs total.
Stainless Steel Hardware
3/8"-16 stainless steel all-thread and hot-dip galvanized hardware resist corrosion in any climate.
See It on the Roof
The 3-RAH-8 in action on commercial rooftop installations.
Technical Specifications
| Model | 3-RAH-8 |
| Optimal Pipe Size | 3" pipe |
| Max Pipe OD (w/ insulation) | 5-1/2" |
| Adjustable Height | 3-7/8" min to 8" max |
| Max Load | 172 lbs (3.0 psi) |
| Unit Weight | 1.72 lbs |
| Case Quantity | 12 units (21 lbs) |
| Recommended Spacing | Not to exceed 10' centers |
| Base Material | UV-Stable Polycarbonate |
| All-Thread | 3/8"-16 Stainless Steel |
| Roller & Axle | Self-Lubricating Polycarbonate |
| Hardware | Hot-Dip Galvanized |
| Base Dimensions | 7-1/2" x 10" |
Accessories: 7½" x 10" support pad, Eternabond® 2-sided tape, 3-RAH pipe guide (various sizes).
3-RAH-8 drawing. Download the full spec sheet below.
Downloads
Spec sheets, CAD files, and BIM objects for your project.
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