Sill/Cill - Eyebrow/Bellcast

Enhance the aesthetic of any window or door opening with our
precision-crafted Cills (Sills) and Eyebrows (Bellcasts).

Our Eyebrows introduce elegant curves and refined depth, transforming standard openings into eye-catching architectural features.

Our Cills are available cut-to-length with optional return mitres, ensuring a clean, seamless installation that adds both form and function.

Designed to complement a wide range of exterior styles, these finishing elements bring timeless appeal and lasting value to your project.

Close-up sketch of a wooden cill cut to length with a returned mitre.
Diagram of an eyelid with labels for eyebrow or Bellcrust and groove, showing a sketch of eyelid anatomy.

Examples of Popular Custom Cill Shapes Manufactured by Accumen

In addition to the range of in-stock Cill profiles (which can be viewed in our Stock Mouldings section), Accumen has manufactured a variety of custom cill shapes to meet unique architectural requirements. Below are examples of some of the more frequently requested custom designs:

  • Deep bullnose front edge with drip groove

  • Tapered cill with integrated slope for water runoff

  • Classic colonial-style cill with stepped profile

  • Wide face cill with chamfered ends

  • Thin-profile contemporary cill for modern aesthetics

  • Dual-drip edge profiles for enhanced water shedding

  • Radius or curved cill sections for arched window openings

These custom profiles can be tailored in dimensions, finish, and detail to suit your specific project needs. For inquiries, quotes, or design assistance, please contact the Accumen team.

Diagram of a window installation showing installed exterior cladding, window, bellcast or eyebrow, and sill with labels.
A chart displaying different carpet swatch shapes labeled from A109 to A118.