




The deeper, strutted thermal break allows for triple glazing while also providing superior thermal separation of the framing materials. This window system is an attractive and versatile product that can be utilized on a wide range of applications from educational, to office and healthcare facilities. Offered with a complete line of thermal subframes, mullions, and architectural sills, the 450X and 450G provide the complete solution for your fenestration needs.
EFCO 450X Windows feature:
Enhancing a variety of design styles, durable anodized and painted finishes provide long-lasting protection and a wide range of color choices.
| 3-3/8 | 4-1/2" | 0.125" | 1" | <0.1 cfm/ft2 Infiltration/Exfiltration | 15 PSF | FX: 150+/- Design PO: 120+/- Design PI: 135+/- Design PO Csmnt: 120+/- Design PI Csmnt: 100+/- Design |
PERFORMANCE GRADE | |||||||
|---|---|---|---|---|---|---|---|
FX: 0.24 - 0.54 | FX: 75 | STC PO/PI: 34 OITC PO/PI: 28 STC PO/PI Csmnt: 38 OITC PO/PI Csmnt: 32 STC FX: 44 OITC FX: 34 | Screw Spline | Corner mitered, reinforced with an extruded corner key, hydraulically crimped, and "cold welded" with epoxy adhesive | FX: AW-PG150 PO: AW-PG120 PI: AW-PG135 PO C: AW-PG120 PI C: AW-PG100 | 40 | Yes |


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