White 150mm External Window Cill 1.2m | uPVC Window Board &amp; Sill

White 150mm External Window Cill 1.2m

Our White 150mm External Window Cill 1.2m provides a clean, professional finish for external window installations while directing rainwater away from the building. Manufactured from durable, weather-resistant uPVC, this external cill is ideal for both replacement projects and new window installations.

Designed with a 30mm rear upstand, this external window sill offers excellent support and easy integration with uPVC window frames. The smooth white finish matches modern uPVC windows perfectly and provides a low-maintenance solution that will not rot, warp, or require painting.

Product Features

High-quality white uPVC construction
150mm projection external window cill
1.2 metre length
30mm rear upstand
Weather-resistant and waterproof
Low-maintenance finish
Suitable for replacement and new build projects
Easy to cut and install

Dimensions

Projection: 150mm
Length: 1.2m
Rear Upstand: 30mm
Front Edge Thickness: Approx. 5mm

Applications

This white external cill is ideal for:

uPVC window installations
Replacement external window sills
Residential properties
Commercial buildings
New build developments
Renovation projects

Durable & Easy to Maintain

Unlike traditional timber window boards, uPVC external cills are highly resistant to moisture, UV exposure, and general weathering. The smooth surface is easy to clean and helps maintain a neat appearance for years to come.

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