Ground Rail Bi-Fold Gate

By Huu Khanh Nguyen · Updated October 29, 2026 · gate, bi-fold gate, accordion gate, ground rail, anti-intrusion, security gate

An accordion gate of one or two leaves, each made of two hinged sections that fold back beside a column while running on a guide rail across the opening. Clear opening and gate height Single or double leaf and hand Leaf section, column, guide rail and finish Opening motion in the plan symbol

Parameters

Name	Default	Unit
Clear Opening	4000	mm
Gate Height	2000	mm
Column Width	160	mm
Leaf Depth	60	mm
Leaves	1
Hand	left
Opening Angle	0	°
Finish	white
groundClearance	125	mm
postGap	75	mm
foldGap	50	mm
pinOffset	125	mm
pinToFace	pinOffset - postGap	mm
height	sizeZ - groundClearance	mm
leafSpan	openingWidth / leafCount	mm
leafLength	(leafSpan - postGap - foldGap) / 2	mm
foldPivot	leafLength + foldGap / 2 - pinToFace	mm
Width	openingWidth + 2 * postWidth	mm
Height	gateHeight	mm