UL Type SCX designation for field matching to published designs per USG
Key features
5/8 in. Type X layer for widely specified USG Firecode X assemblies
Ten-foot length for production framing heights with fewer mid-wall joints
Technical specifications
| R-Value | 0.56 |
|---|---|
| Thickness | 0.625 in |
| Width | 48.0 in |
| Length | 120.0 in |
| Coverage | 40.0 sq ft/pack |
| Material | Noncombustible gypsum core with recycled face and back papers (Firecode X per USG) |
| Fire rating | 5/8 in. Type X gypsum panel (UL Type SCX) per USG Firecode X; UL Classified for fire resistance where SCX is listed; edge marking on long edge per USG. |
| Sound rating | Acoustic performance is assembly-dependent; gypsum finish layers contribute to STC in tested partition assemblies (ASTM E90). |
| Density | Nominal 2.2 lb/sq ft per USG Firecode X specifications |
| Construction type | ASTM C1396 for 5/8 in. Type X gypsum wallboard per USG Firecode X |
| Application area | Rated interior walls and ceilings where UL designs list SCX panels |
Product details
Commercial corridors and ten-foot stud heights frequently specify continuous five-eighths Type X layers; stocking ten-foot Firecode X reduces butt joints at mid-span, which lowers mud volume and flatness risk on long sight lines under linear LED fixtures.
Forty square feet per sheet at 2.2 lb per square foot nominal per USG yields about eighty-eight pounds per sheet—brief crews on team-lift rules and panel carts before production day.
The Firecode X documentation set—ASTM C1396 Type X, UL classification, GREENGUARD Gold, SCX edge marking—should be bookmarked in the submittal folder next to the architect’s UL drawing references.
Moisture Resistance: No on USG’s page means this is not Mold Tough; damp rated corridors may require SCX panels with mold-resistant papers or separate membrane strategies per the spec.
For acoustic STC, rely on the tested partition assembly, not marketing adjectives; gypsum layer count and damping compound details live in the UL or STC report.
Documents & certifications
Technical data sheet
Manufacturer-tested R-value, coverage, fire notes, and handling—use for submittals, RFIs, and field QA.
Download PDF (opens in new tab)Certifications & compliance
GREENGUARD Gold; UL fire and surface-burning classification per USG; ASTM C1396 Type X
Frequently asked questions
Can SCX layer count differ from EcoSmart ULIX?
Can SCX layer count differ from EcoSmart ULIX?
Yes—each UL design names panel types and layers; never assume interchangeability between SCX, ULIX, and FC30 markings.
What fastener spacing applies?
What fastener spacing applies?
Follow GA-216 / ASTM C840 for non-rated applications and the published UL design for rated assemblies—treat them as different rule sets.
Is this panel mold resistant?
Is this panel mold resistant?
USG lists Moisture Resistance: No on the Firecode X product page—use Mold Tough Firecode X when the spec ties Type X to mold-resistant papers.
How do I estimate truck weight?
How do I estimate truck weight?
Multiply sheet area by 2.2 lb/sq ft nominal, then multiply by bundle count from the distributor ticket.