The gasket used for this is the Square Rubber Gasket available to purchase separately here.
This handrail is for use in the Frameless Balustrade system. The Square Rubber Gasket is placed on top of the glass panel and then the Slotted Handrail is fitted on top of the gasket. This handrail will fit various glass thicknesses.
For help in fitting the Frameless Balustrade system please read our Frameless Balustrade brochure downloadable from here. For a visual guide please see our 3D animated video on the Frameless system page here.