Back To Back Glass Shower Door Knob-5122
Back To Back Glass Shower Door Knob (Z-5122) is a shower door handle & knob series for frameless glass shower doors, made for 10 mm (3/8″), 12 mm (1/2″) tempered glass, built from brass.
| Use Monolithic Tempered Glass For Glass Thicknesses | |||
| 1/2′′ （12MM） | 3/8′′ （10MM） | 5/16′′ （8MM） | 1/4′′ （6MM） |
| √ | √ | ||
Solid Brass Thru-Glass Construction
Back to Back and single side available
Designed for 3/16″ – 1/2″ Glass
Requres 3/8″ (8mm)- 1/2″(12mm) Diameter
Hole for Installation
For broader selection guidance, see our complete shower hardware specification guide and PVD coating guide.
Back To Back Glass Shower Door Knob (Z-5122) is a door knob for frameless glass shower doors. It is a back-to-back fitting: one bolt set clamps both sides of the door at the same time. It mounts on 10 mm (3/8″), 12 mm (1/2″) tempered glass with through-glass fixings. Wholesale buyers commonly source this model as a back to back glass knob. For the wider selection context, see Zimmor’s shower handle & knob guide.
Key Features
- Glass compatibility: Mounts on 10 mm (3/8″), 12 mm (1/2″) monolithic tempered glass
- Material: brass construction
- Back-to-back mounting: single bolt set clamps both glass faces
Applications
- Pull handles for pivot and hinged frameless shower doors
- Grips for sliding shower door leaves
- Back-to-back pull pairs on frameless glass doors
- Hotel and apartment bathroom programs specified in bulk
- Office glass partition doors
- Wholesale and OEM sourcing programs – a recurring brass shower door knob line for distributors
More in this series: Back To Back Glass Shower Door Knob-5119 · Back to Back Door Knob-5112
Installation Notes
- Drill the through-holes in the glass panel to the handle’s hole pattern before tempering – do not drill tempered glass.
- Insert the mounting bolts through the glass and thread them into both handle halves.
- Tighten both sides alternately so the knob stays centered on the hole pair.
- Check the grip is solid with no racking between the two halves.
- Re-torque after the first week of use if needed.
Frequently Asked Questions
What glass thickness does the Z-5122 mount on?
It mounts on 10 mm (3/8″), 12 mm (1/2″) tempered glass. The through-glass holes are drilled before tempering, so confirm thickness and hole pattern with your fabricator early.
What is the Z-5122 made of?
The Z-5122 is built from brass. Solid metal construction matters on glass hardware – thin stamped parts creep loose under door loads.
What does back-to-back mean on shower door handles?
A back-to-back handle is one assembly: a tube passes through the glass and bolts clamp both sides, so you get a pull outside and a matching grip inside from a single fixing set.
Does the handle need maintenance?
Retighten the set screws after the first week of use and wipe dry after showers. Plated brass tube holds its finish well; avoid abrasive creams.
Do you supply the brass shower door knob 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.
