Xtend Inset Header and Sill Profiles
Inset-mount header and sill cross-sections for the Xtend 4-vent porch window. For installs set into 1" thick inset framing, with flange treatment, weather-strip locations, and the sill detail that allows water exfiltration.
What this document covers
This drawing provides the top and bottom (header and sill) profiles for an inset-mounted Xtend window. Use it with the inset side profile to detail the full inset opening.
- Inset header cross-section
- Inset sill cross-section
- Flange placement against existing framing
- Brush weather-strip locations
- Water-exfiltration detail at the sill
Key specifications at a glance
- Window height: inset frame opening less 1/4"
- Inset framing: 1" thick
- Extrusion: 16 ga powder-coated aluminum, approx. 1/16" thick
- Mounting: exterior trim may go over the flanges; flat-head color-matched screws provided
- Scale: 1:2
Installation notes
Sealant: seal behind the flange, but leave the sill flange unsealed so water can exfiltrate. Weather strips: brush weather strips are located as marked. Note: windows under 60" in height use 3-vent panels utilizing the 3 outer tracks.
