Glass panel width Calc

In order to calculate the width of the glass infill panel

Option 1 Measure the post centres then deduct the thickness of the post, deduct a further 40mm for the glass clamp wall and clamp to glass thickness (20mm each side).

Option 2 Measure between the posts and deduct 40mm wall and glass thickness (20mm each side).

With regards to the glass height generally the glass finishes level with the top shoulder of the post leaving a 75mm
gap between the top edge of the glass and handrail. The gap under the glass is generally set at the same 75mm but is at the discretion of the end user but should be no greater than 100mm