Blum 71B4500C CRISTALLO 110° overlay glass-door BLUMOTION hinge – Onyx Black

The Blum 71B4500C is a concealed CRISTALLO hinge for frameless glass and mirror cabinet doors. It is configured for an overlay application and combines a discreet Onyx Black finish with integrated BLUMOTION soft close.

The hinge is attached to a separate CRISTALLO adhesion plate bonded to the rear of the glass or mirror door. The glass is not drilled for a conventional hinge cup, but the adhesion plate must be professionally bonded using a suitable process for the specific glass, mirror and adhesive system.

Technical details

• Blum part number: 71B4500C
• Hart Wholesale SKU: HIO71B4500
• Type: CRISTALLO concealed glass-door hinge
• Application: overlay
• Opening angle: 110°
• Hinge geometry: 0-protrusion
• Closing action: spring closing with integrated, switchable BLUMOTION
• Door material: suitable glass or mirror fronts
• Approximate door thickness: 3–8 mm
• Hinge-to-door fixing: CRISTALLO adhesion plate, supplied separately
• Cabinet fixing: CLIP connection to a compatible mounting plate, supplied separately
• Adjustment: three-dimensional adjustment through the hinge and selected mounting plate
• Height adjustment: up to ±3 mm, depending on mounting plate
• Side adjustment: up to ±2 mm
• Depth adjustment: +3/-2 mm
• Finish: Onyx Black
• Quantity: one hinge

CRISTALLO glass-door planning

The correct adhesion plate, door arrangement and mounting-plate position must be selected before installation. Confirm the glass or mirror thickness, cabinet construction, door clearances and overlay dimensions during planning.

The CRISTALLO adhesion plate must not be treated as a simple adhesive pad. Bonding performance depends on suitable surface preparation, adhesive selection, positioning and curing.

Installation information

No 35 mm hinge-cup hole is drilled through the glass. Instead, a compatible adhesion plate is bonded to the rear of the glass or mirror front, and the hinge connects to that plate without tools.

Blum recommends that the adhesion plate is fitted by an experienced glass manufacturer. Follow the requirements of the glass and adhesive suppliers for preparation, bonding and curing, and verify the completed bond before loading the door.

Components required

• CRISTALLO adhesion plate for the glass or mirror front
• Compatible Blum CLIP mounting plate for the cabinet
• Suitable professional glass-bonding adhesive or bonding service

The adhesion plate and cabinet mounting plate are ordered separately. This listing is for one hinge.

For the verified nickel counterpart, see the Blum 71B4500C CRISTALLO glass-door BLUMOTION hinge. Browse the Blum CLIP top hinge range or Blum cabinet fittings.

Frequently Asked Questions

Does the Blum 71B4500C require a hole in the glass?

No. The CRISTALLO system uses an adhesion plate bonded to the rear of the glass or mirror, so a conventional 35 mm hinge-cup hole is not required.

Is the adhesion plate included?

No. The CRISTALLO adhesion plate must be selected and ordered separately.

Is the cabinet mounting plate included?

No. A compatible Blum CLIP mounting plate must also be ordered separately.

What glass thickness is suitable?

The planning information covers glass and mirror fronts approximately 3–8 mm thick. Confirm suitability with the glass and adhesive suppliers.

Does this hinge have soft close?

Yes. BLUMOTION soft close is integrated into the hinge and can be switched off when required.

Can this be used on a mirror door?

Yes, provided the mirror front, adhesion plate and professional bonding process are suitable for the application.

Should the adhesion plate be fitted by a glass specialist?

Yes. Professional fitting is recommended because surface preparation, adhesive selection, plate positioning and curing affect the bond.

What does 0-protrusion mean?

When correctly planned, the open door remains clear of the internal cabinet area, which can help with internal drawers and pull-out shelves.