Location: HOME > Windows > 138 Series Ultra-Insulated uPVC / Vinyl Flanged Single Hung Windows

138 Series Ultra-Insulated uPVC / Vinyl Flanged Single Hung Windows

Introduction：

The 138 Series Ultra-Insulated uPVC / Vinyl Single Hung Windows elevate the traditional American single hung design with a heavy-duty, high-insulation profile structure. Featuring a fixed upper sash and a vertically sliding lower sash, it provides controlled ventilation with enhanced sealing performance.

The 11-chamber uPVC profile significantly improves thermal efficiency and structural stability, making it suitable for energy-conscious residential projects. Equipped with American VIG hardware, this system delivers smooth operation and dependable durability, meeting the expectations of premium North American housing developments.

Basic Configuration

Type	Single Hung Windows
Frame material	11 chambers UPVC profile
Frame thickness	138 mm
Thickness	2 mm
Glass	3Low-e+14Ar+3+14Ar+3Low-e(Warm Edge Spacer）
Hardware	VIG
Open Method	1 Fixed+1 Sliding
U-Factor	≤1.2w/㎡ ·k
Color	White/Black or Wood Colors(German Renolit Film)