Div 09 · Finishes
M-BLOC Shaft Liner Panel
A
American Gypsum · M-Bloc Shaft Liner, 1 in
A 1 in. thick, 24 in. wide mold- and moisture-resistant gypsum liner panel made to ASTM C1396 Section 6 for shaft wall framing.
✓ Verified 2026-08-28
Specs on this page were checked against American Gypsum product page on 2026-08-28.
Specifications
| Thickness | 1 in (25.4 mm) |
| Width | 24 in (610 mm) |
Certifications & Standards
ASTM C1396 Section 6
ASTM C840 application
ASTM E84
ASTM D3273 mold resistance test method
Attributes — product claims, not third-party certifications
ShaftlinerMold resistantMoisture resistant
Sustainability
No sustainability metrics on file for this product.