Bay Window

By Huu Khanh Nguyen · Updated October 25, 2026 · andersen, rehau, bay

A projecting window of a fixed centre unit and two angled side units that open like casements, joined by two posts. Plan angle of the side units Side units hinged left or right Frame profile, cill and ventilator Sash, bead and glass type Hinges, handles and glazing bars

Parameters

Name	Default	Unit
Width	2400	mm
Height	1480	mm
Frame depth	80	mm
Finish	powderRal9016
Frame face width	82	mm
Plan angle	30	°
Side unit width	600	mm
Post width	96	mm
Left unit hinge side	left
Right unit hinge side	right
Glass thickness	24.4	mm
Vertical bars	1
Horizontal bars	1
Left unit opening	0	°
Right unit opening	0	°
Sash edge inset	frameWidth - 34	mm
Post setback	postWidth / (2 * Math.cos(bayAngle * Math.PI / 360))	mm
Centre unit width	sizeX - 2 * (flankerWidth + postSetback) * Math.cos(bayAngle * Math.PI / 180) - 2 * postSetback	mm