Gainsborough Trilock Traditional Knobset Double Cyclinder Bright Chrome 890TRIBC
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Gainsborough Trilock Traditional Knobset Double Cyclinder Bright Chrome 890TRIBC
The Gainsborough Trilock Traditional Knobset, SKU: 890TRIBC, is a classic entrance set for external doors. The double cylinder allows the deadbolt to be locked and unlocked with a key from both the inside and outside, providing maximum security. It is designed to fit a standard 54mm hole with a 60mm backset. All Trilocks feature tarnish-resistant finishes that can be matched in look and feel to your favourite interior levers.
Door Functions Explained
Gainsborough supplies the latch or lock with the handle set. The function you choose determines what comes in the box.
| Function | How it works | What comes with it | Use |
|---|---|---|---|
| Passage | Non-locking. The lever operates from both sides at all times. | The passage tubular latch is INCLUDED. | Hallways, wardrobes, and any internal door that does not lock. |
| Privacy | Locks from the inside with a button or turn, with an emergency release outside. | The privacy tubular latch is INCLUDED. | Bathrooms, ensuites and bedrooms. |
| Entrance | Key-lockable. Supplied with a cylindrical (key-in-lever) lock. | The cylindrical lock and keys are INCLUDED. | Front and back doors, where a cylindrical lock is acceptable. |
| Dummy / Fixed | A fixed lever with no latch and no moving parts. | SINGLE handle only (not a pair) — supplied with the spindle. No latch. | A fixed panel, or the inactive leaf of a double door. |
If you want a full mortice entrance rather than the cylindrical lock, the mortice lock is ordered separately. Gainsborough's mortice locks are double-cylinder, so the cylinder and keys are built in.
Separate Entrance Kit — Sold Separately
The handle set above comes with its latch or cylindrical lock. If you want a full mortice entrance instead, order one of the lock bodies below in addition to the handle.
| Code | Lock body | Backset | Notes |
|---|---|---|---|
| 755-60 | Double Cylinder Mortice Lock | 60mm backset | Keyed from both sides. Cylinder and keys are built in. |
| 775-60 | Roller Bolt Mortice Lock | 60mm backset | Roller bolt version, for doors that need a quieter, smoother close. |
| 760 | Sliding Door Mortice Lock | — | For sliding and cavity doors, not hinged doors. |
Gainsborough does not make a separate euro cylinder or escutcheon — the mortice locks above are double-cylinder, so the cylinder and keys come with the lock.
Finish
This product code is this finish only. Other finishes have their own code.
Dimensions
| Measurement | Size |
|---|---|
| Backset | 60 |
| Bore Hole | 54 |
| Edge Bore | 22 |
Centre to centre is the fixing-hole spacing. Projection is how far the handle stands off the door face.
Specifications
| Finish | Bright Chrome |
| Style Name | Knobset |
| Product Type | Trilock |
| Application | External |
| Backset | 60 |
| Bore Hole | 54 |
| Edge Bore | 22 |
| Locking | Locking |
| Latch Included | true |
Warranty
Applied to the Classic / Diplomat Knob range. Covers defects in materials and workmanship under normal use, when correctly installed.
ⓘFinish warranty10-Year finish. Warranty periods differ by series — this is the cover for this range.
What is the Gainsborough Trilock Traditional Knobset Double Cyclinder Bright Chrome 890TRIBC?
It is a Gainsborough door knob from the Trilock range, product code 890TRIBC.
What is the backset?
60mm. Backset is the distance from the edge of the door to the centre of the handle. Measure the door before ordering.
What size hole does the door need?
A 54mm bore hole, with a 22mm edge bore.
What warranty does it carry?
10-Year Mechanical, plus 10-year finish. Gainsborough sets its warranty by range rather than across the brand, and this item falls under the Classic / Diplomat Knob cover. It applies to defects in materials and workmanship under normal use, when correctly installed.
How do I care for the finish?
Wipe with a soft, damp cloth and dry. Avoid abrasive cleaners and solvents.
How can I get help?
Call Prime Hardware on 1800 329 028, email sales@primehardware.com.au, or visit the showroom at 2/249 Annangrove Road, Annangrove NSW 2156.
