Square Corner Movable Transom Application Shower Glass Clamp-4620-1
Square Corner Movable Transom Application Shower Glass Clamp (Z-4620) is a shower glass clamp for frameless shower panels and glass partitions, made for 8 mm (5/16″), 10 mm (3/8″), 12 mm (1/2″) tempered glass.
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| Use Monolithic Tempered Glass For Glass Thicknesses | |||
| 1/2′′ (12MM) | 3/8′′ (10MM) | 5/16′′ (8MM) | 1/4′′ (6MM) |
| √ | √ | √ | |
Designed for 5/16″(8mm) to 1/2″(12mm)Thick Glass
For broader selection guidance, see our complete shower hardware specification guide and PVD coating guide.
Square Corner Movable Transom Application Shower Glass Clamp (Z-4620) is a frameless shower glass clamp for fixing glass panels to walls, floors or each other. It clamps 8 mm (5/16″), 10 mm (3/8″), 12 mm (1/2″) monolithic tempered glass without drilling the panel. Wholesale buyers commonly source this model as a square corner shower glass clamp. For the wider selection context, see Zimmor’s shower glass clamp guide.
Key Features
- Glass compatibility: Clamps 8 mm (5/16″), 10 mm (3/8″), 12 mm (1/2″) monolithic tempered glass
- Geometry: built for 180° panel angles with a square-corner profile
Applications
- Fixing shower screens to walls or floors without drilling the glass
- Glass-to-glass joints at 90°, 135° and 180° in frameless enclosures
- Transom bars and fixed top panels above sliding or pivot doors
- Office and retail glass partitions
- Display shelving and signage panels in commercial fit-outs
- Wholesale and OEM sourcing programs – a recurring tempered glass clamp line for distributors
More in this series: Square Corner Shower Glass Clamp-4620 · Square Corner Shower Glass Clamp-4623
Installation Notes
- Set the transom glass under the header line and mark the clamp positions on both sides.
- Fix one clamp half to the fixed structure, then offer up the glass and close the clamp around the transom edge.
- Snug the screws evenly so the rubber liners carry the panel – do not over-torque.
- Check the transom is level before final tightening.
- Never drill or notch tempered glass. Professional installation recommended.
Frequently Asked Questions
What glass thickness does the Z-4620 clamp fit?
The Z-4620 works with 8 mm (5/16″), 10 mm (3/8″), 12 mm (1/2″) monolithic tempered glass. Measure the actual panel before ordering – glass thickness varies between suppliers, and the clamp rubber liners must match the real thickness, not the drawing.
How many clamps do I need per panel?
Small shower returns and screens normally take 2 clamps; taller panels and railing infills take 3-4 depending on height and wind exposure. Follow the span in your project drawing.
Does the clamp need periodic re-tightening?
Check the set screws once after the first week of use, then seasonally. Glass panels do not settle like timber, so clamps rarely need more than that.
Do you supply the movable transom glass clamp for wholesale and OEM programs?
Yes – this model is produced in Zimmor’s Foshan factory for wholesale and OEM sourcing: custom finishes, packaging and volume pricing are confirmed per order.









