Thermal 2-1/2" System
Best all-around: retail, education, interiors with comfort targets.
| System | Glazing | U-Factor | AI (cfm/ft²) | Notes |
|---|---|---|---|---|
| Thermal 2-1/2" | 1" IGU | 0.32–0.38 | ≤ 0.06 | Balanced efficiency & cost |
| Thermal 3" | 1"– 1 1/4" IGU | 0.29–0.35 | ≤ 0.06 | Taller spans / heavier doors |
| Standard 2-1/2" | 1/4"–1" | — | ≤ 0.10 | Interiors / warm zones |
| Impact | Laminated IGU | per certificate | ≤ 0.06 | HVHZ-rated options |
Actual ratings depend on configuration. We’ll match your climate zone and code requirements in the quote.