The 4500 series is a fixed and double-hung window that has been designed to provide years of low maintenance with premium performance. With 0.080” nominal wall thickness throughout the mainframe and sash and a 1/8” thick aluminum sill, the 4500 is up to the task that monumental window designs require.
- 4” Architectural Grade Window System
- Various glazing thicknesses available
Dual Glazed Interior Sash