# Performance Specification Gap in Division 08 Openings submittals

> Source: https://deviationcheck.com/divisions/08-openings/performance-specification-gap/

A measurable performance property in the submittal (rating, capacity, tolerance, efficiency) does not meet what the spec requires.

## What to look for in Division 08 Openings

Key performance parameters in Div 08 submittals:
- **Fire rating** (20/45/60/90/180 minute per UL/WHI/Intertek tested assembly)
- **STC (Sound Transmission Class)** rating for acoustic doors and assemblies
- **U-value** (thermal transmittance, Btu/hr-sf-F) for windows, curtain wall, storefronts
- **SHGC (Solar Heat Gain Coefficient)** per NFRC rating
- **VLT (Visible Light Transmittance)** percentage
- **Air infiltration rate** (cfm/sf at test pressure per ASTM E283)
- **Water penetration resistance** (psf per ASTM E331 or AAMA 501.1)
- **Structural wind load** (psf per ASTM E330, design pressure)
- **Forced entry resistance** (per ASTM F588 where specified)
- **Impact resistance** (ANSI Z97.1 and CPSC 16 CFR 1201 for safety glazing)
- **Bullet resistance** (UL 752 levels where specified)
- **Blast resistance** (GSA/ISC or ASTM F2927 where specified)
- **Door gauge** (16ga, 18ga, 20ga for hollow metal)
- **Frame gauge** (16ga, 14ga for hollow metal)
- **Glass makeup** (monolithic, laminated, insulating, tempered, heat-strengthened)
- **Curtain wall deflection** (L/175, L/240, or as specified)

## Severity

Default grade: Blocker. Always a Blocker when the gap touches life-safety or structural performance.