Unirac Stronghold Mill Attachment Base with Butyl Pad SHBUTYLM2
Unirac Stronghold Mill Attachment Base with Butyl Pad SHBUTYLM2
Unirac Stronghold Mill Attachment Base with Butyl Pad SHBUTYLM2
Unirac Stronghold Mill Attachment Base with Butyl Pad SHBUTYLM2
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Unirac Stronghold Mill Attachment Base with Butyl Pad SHBUTYLM2
SHBUTYLM2
Unirac Stronghold Mill Attachment Base with Butyl Pad SHBUTYLM2
The StrongHold® Butyl Attachment (SHBUTYLM2) is a watertight, low-profile roof attachment for Unirac’s NXT UMOUNT rail system. It uses a factory-applied 1/8″ butyl pad and stainless self-drilling fasteners with EPDM washers to create a durable seal on composition shingle roofs while providing a solid clamp point for the rail.
Key Benefits
Watertight by Design: Integrated 1/8″ butyl layer and EPDM-washer screws form a reliable, long-term seal.
Fast, Clean Install: Two #12-14 HWH stainless self-drillers (with EPDM) and a pre-set clamp interface speed attachment.
NXT UMOUNT Compatible: Pairs with the StrongHold Rail Clamp and Combo Clamp within the NXT UMOUNT ecosystem.
Special Technology
Butyl Sealing Pad: 2-1/2″ × 4-1/2″, 1/8″ butyl provides full-contact sealing under the base. Extra pads available (XTRABUTL-SH).
Adjustability: Slotted geometry allows ~1-1/16″ adjustment for alignment.
Warranty
Manufacturer’s Standard Warranty (Unirac).
Best Uses
Residential Composition Shingle Roofs: Where a compact, sealed attachment is preferred for NXT UMOUNT rails.
Specifications Table
| Specification | Data |
|---|---|
| Part Number | SHBUTYLM2 |
| Product Type | StrongHold® Attachment with Butyl (NXT UMOUNT) |
| Roof Type | Composition shingle |
| Sealing Medium | 1/8″ butyl layer (integrated) |
| Butyl Pad Size | 2-1/2″ × 4-3/8″ × 1/8″ (extra pad XTRABUTL-SH) |
| Base Dimensions (key refs) | 2-1/2″, 3″, 4-1/2″ callouts per drawing; ~1-1/16″ slot adjustment |
| Included Fasteners | (2) #12-14 HWH SS self-drilling screws with #12 EPDM bonded washers |
| Rail Interface | StrongHold Rail Clamp / Combo Clamp (NXT UMOUNT) |
| Finish / Color | Mill (silver) variant shown; dark variant exists |
| Standards | NXT UMOUNT system component (see NU drawings) |
| Weight | 0.575 lb |
| Notes | All dimensions nominal; drawing not to scale |
About Unirac:
Unirac, headquartered in Albuquerque, NM, is a leading provider of innovative solar racking solutions. With a focus on performance, durability, and ease of installation, Unirac supports projects ranging from residential systems to large-scale commercial applications.
Why Buy From US Solar Supplier?
As an American founded company out of Kentucky, US Solar Supplier is committed to providing top-quality solar products, backed by the world’s leading manufacturers. Our promise is to get you the fairest price from the best brands that offer warranties you can count on. We are updating our inventory daily with solar components that offer the latest technology. With a reputation for excellence and a dedication to customer satisfaction, we ensure that every product we sell meets the highest standards in the industry.
Need Assistance?
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