True Divided Lite (TDL) for Custom Steel Windows & Doors

Because each pane sits directly against structural steel, TDL construction has no daylight gaps between muntin and glass, the seam that can appear where a decorative bar meets a tempered glass surface.

Due to the limits of glass manufacturing, a single large pane runs into size constraints an SDL build can't exceed. Because TDL divides an opening into multiple panes rather than one continuous IGU, it can achieve larger overall openings than a single-pane construction. Where a project calls for an opening larger than a single IGU can span, TDL is the answer.

Though size minimums on tempered glass do impose some restrictions, TDL's pane layout isn't fixed to a single look. Muntin placement and pane divisions can be adapted to the project's architectural style. Discuss layout during specification with the Studio Steel team.

Push beads are the component that makes TDL construction possible: they separate and hold each individual pane in place. See Push Beads for the full component spec.

Learn more about Push Beads →

TDL is the right call where authenticity is the priority: historic restorations, and projects where genuine period-correct detailing matters more than any other consideration. See the Divided Lite pillar for a full comparison if the project's priorities are different.

Divided Lite →