Div 05 · Metals
ClarkDietrich J-Tabbed Track (J-Runner)
C
ClarkDietrich · 250JR-21
A 2-1/2 in. unequal-leg J-runner used at floor and ceiling of shaftwall assemblies to hold the liner panel and CT studs in place.
✓ Verified 2026-08-28
Specs on this page were checked against ClarkDietrich Shaftwall catalog on 2026-08-28.
Specifications
| Width | 2-1/2 in |
| Design thickness | 21 mil |
| Gauge | 25 ga |
Certifications & Standards
ASTM C645
ASTM A1003
Attributes — product claims, not third-party certifications
Unequal leg profileShaftwall perimeter framing
Sustainability
No sustainability metrics on file for this product.