Lockton Euro Smart Mortice Lock Body - Suits Sliding Door - 45mm Backset - 270x22mm Faceplate

Lockton E-Series Euro Smart Mortice Lock Body - Sliding Door - 45mm Backset - 270x22mm Faceplate

This Lockton E-Series euro mortice lock body suits sliding and bifold doors. It features a hook bolt mechanism rather than a latch — the hook bolt engages a striker on the door frame as the door closes and retracts when the handle is operated. This design is essential for sliding doors, where a standard latch would disengage under sideways load from the door's natural movement.

Available with a 45mm backset, this body suits sliding doors where the existing or planned mortice prep places the spindle at 45mm from the door edge. The 270mm x 22mm faceplate is longer than the hinged door equivalent, accommodating the extended hook bolt cavity. Lock centres are 85mm — the standard for this class of mortice body. The 8mm square spindle hub accepts all Lockton and McGrath E-Series sliding door smart lock lever sets.

McGrath Locks does not stock a matching mortice body at this backset size. This Lockton body is compatible with McGrath brand smart locks and can be used as the mortice component in any McGrath E-Series installation at this backset.

Key Features

• Hook bolt mechanism — purpose-designed for sliding and bifold doors; resists lateral load from door travel
• SS304 stainless steel hook bolt and case body — corrosion-resistant throughout
• 1.5mm thick SS304 steel case — consistent dimensional accuracy
• 8mm square spindle hub — accepts all Lockton and McGrath E-Series sliding door smart lock spindles
• 85mm lock centres — matches pinhole spacing on ML-A210, ML-A231, and ML-A236 McGrath Locks
• Faceplate 270mm x 22mm — standard sliding door mortice channel fit; longer than hinged door equivalent to accommodate hook bolt geometry
• Dead latching via SS304 deadbolt — lift lock lever to manually engage deadbolt
• Meets ANSI/BHMA standards — 500,000-cycle tested; passes BHMA Level 2 and Level 3
• CE marked
• Supplied with strike plate, strike plate pocket, and fixing screws

Compatibility - Lockton & McGrath Smart Locks

This mortice body is compatible with the following Lockton and McGrath smart locks (sliding door models):

Brand	Smart Lock Model	Notes
Lockton	ELEV36 E-Series (Sliding Door)	Primary Lockton smart lock for sliding doors — uses this hook-bolt mortice body
McGrath Locks	ML-A210 Slimline	Suits 28mm and 35mm backsets (McGrath stocked backsets only)
McGrath Locks	ML-A231	Suits 28mm and 35mm backsets (McGrath stocked backsets only)
McGrath Locks	ML-A236	Suits 28mm and 35mm backsets (McGrath stocked backsets only)

Note: McGrath Locks does not stock sliding door mortice bodies at 20mm or 45mm backsets. These Lockton-only sizes are fully compatible with the McGrath ML-A210, ML-A231, and ML-A236 sliding door smart lock handles. If you are unsure which backset your sliding door requires, see Chapter 02 — Measuring Your Door.

Rows in bold indicate the McGrath equivalent of this specific Lockton body. McGrath does not stock the 20mm or 45mm sliding door backsets.

What's in the Box

• Lockton E-Series euro hook-bolt mortice lock body — sliding door, 45mm backset (Lockton Art ID: SML-S45)
• Strike plate
• Strike plate pocket
• Fixing screws

Note: The smart lock handle set and keypad are sold separately. This product is the internal lock body only. See the Lockton ELEV36 E-Series (Sliding Door) for the complete smart lock lever set.

Suitable Uses

Suitable for: Timber and aluminium sliding and bifold doors prepared with a mortice slot at 45mm backset. Residential and commercial sliding door entry where a Lockton or McGrath smart lock is being fitted or replaced at this specific backset dimension.

Not suitable for: Hinged or swing doors (use the hinged door mortice body range), security screen doors, or gate locks. Confirm your backset before ordering — see Chapter 02 — Measuring Your Door.

Available Finish Options

• 
  Satin Stainless Steel
  (This Product)
  STK SML-S45

Finish selection does not affect functionality, compliance, or performance.

Lockton E-Series Mortice Lock Range — Sliding Door

This hook-bolt mortice body is available in four backset sizes for sliding doors. For hinged and swing doors, a separate latch-and-deadbolt mortice range is available in ten backset sizes.

For hinged and swing doors, see the E-Series hinged door mortice body range (10 backset sizes, 25mm to 70mm).

Full Specifications

Dimensions

The dimension drawing below covers all four backset sizes in the sliding door range. Locate SML-S45 (45mm backset) in the diagram.

Faceplate: 270 x 22mm. Lock centres: 85mm. Case body depth (45mm backset): 59mm. Spindle hub: 8mm square.

Frequently Asked Questions

How do I measure the backset on a sliding door?
Measure from the door edge to the centre of the existing spindle hole (or latch/hook hole). For sliding doors the relevant dimension is taken perpendicular to the door edge, not along it. If that distance is 45mm, this body is correct. See Chapter 02 — Measuring Your Door and our backset measurement guide.

Why does the sliding door mortice have a hook bolt instead of a latch?
On a sliding door, a standard spring latch would disengage under the lateral load as the door moves along its track. A hook bolt rotates to engage the strike plate positively and is specifically designed to hold against this lateral force. This is the standard mechanism for all Lockton and McGrath sliding door mortice bodies. See Chapter 04 — Door Type Compatibility for more on sliding door hardware requirements.

Will this body work with my McGrath sliding door smart lock?
Yes. The Lockton E-Series sliding door mortice bodies are compatible with McGrath ML-A210, ML-A231, and ML-A236 sliding door smart locks (these are the models McGrath offers for sliding doors, distinct from the ML-NX5 which is hinged-door only). McGrath does not stock a version at the 45mm backset, but this Lockton body is fully compatible with the McGrath sliding door range.

Is this suitable for bifold doors?
Yes, where the bifold door has a standard mortice channel at 45mm backset and uses a similar hook-bolt mechanism. Confirm the geometry of your bifold door stile before ordering. Terry's can advise on suitability — call or visit the showroom.

Does the mortice body come with a smart lock or keypad?
No. This is the internal lock body only. The smart lock handle and keypad are sold separately. For a complete sliding door smart lock solution, see the Lockton ELEV36 E-Series (Sliding Door).

Additional Information

Sliding door backsets and stile widths: The most common sliding door backset in Australian aluminium stacker doors is 28mm or 35mm, matching the McGrath ML-SP-H-28/85-HOOK and ML-SP-H-35/85-HOOK respectively. The 20mm and 45mm sizes suit narrower-stile or wider-stile doors. Confirm your stile width and existing prep before selecting a size. See Chapter 02 — Stile Width and backset guidance for smart locks.

Lockton and McGrath — same body geometry, different distributors: Lockton is distributed in Australia by Sieper Group; McGrath Locks are distributed by LSC. Despite this, the E-Series mortice bodies from both brands share identical internal geometry, cycle ratings, and compliance. Where both brands offer the same backset size, the bodies are confirmed interchangeable. For installers who work across both brands, these Lockton bodies can serve as replacement or upgrade stock for any McGrath sliding door installation at a matching backset. For more on the platform, see Chapter 14 — TTLock Platform Guide.

Other backsets in this range: If 45mm is not the right fit for your sliding door, the same hook-bolt body is available in: 20mm, 28mm, 35mm. For hinged and swing doors, ten backset sizes are available — see the hinged door mortice body range.

Installation template: A printable installation template for this mortice body range is available as a PDF download below. Fold on the 45mm line before marking out your door. See Terry's installation services if you need professional fitting on the Gold Coast.

Warranty

Warranty
Lockton products carry tiered manufacturer warranties — up to 10 years on mechanical locks, 3 years on smart locks and PVD/chrome finishes, and 1 year on electronic door closers, mechanical digital locks, and key accessories. Batteries carry no warranty. Proof of purchase required for all claims. Returns & Warranty | Lockton Warranty Statement

PDF Downloads

Download PDF Resources
Lockton E-Series Mortice Lock - Sliding Door - Dimension Drawings (PDF)
Lockton E-Series Mortice Lock - Sliding Door - Installation Template (PDF)
McGrath ML-Euro-85-Series - Sliding Door Mortice - Product Brochure (PDF)