Austyle 49425 Sliding Door Entrance Lock - 28mm Backset - Satin Stainless Steel
The Austyle 49425 is a 304 stainless steel sliding door entrance lock body designed for use with the Austyle 59407 Digital Lever Entrance Lock Set. It provides the mechanical locking function for aluminium hinged and sliding doors where the 59407 digital lever is the access control unit. The 49425 features dual locking bolts, a 28mm backset, 85mm centre-to-centre spindle spacing, and a 270x22mm faceplate in a satin stainless steel finish.
This mortice is sold separately and is one of three locking options available for the 59407 digital lever. The correct mortice depends on the door type and required backset — refer to the Mortice Selection section below before ordering.
Key Features
- Dual locking bolts for sliding and aluminium hinged door applications.
- 304 stainless steel construction throughout.
- 28mm backset with 85mm centre-to-centre spindle spacing.
- 270x22mm faceplate.
- Satin stainless steel finish.
- For use with the Austyle 59407 digital lever set only.
Mortice Selection - Which Lock Body Do You Need?
The Austyle 59407 digital lever is compatible with three different mortice lock bodies. Confirm your door type and backset before ordering.
What's in the Box
- 1 x Austyle 49425 sliding door mortice lock body
Suitable Uses
- Sliding glass doors fitted with the Austyle 59407 digital lever set
- Aluminium hinged doors requiring a 28mm backset with the 59407 digital lever
- Replacement of a worn or damaged sliding door mortice in an existing 59407 installation
Austyle Smart Lock Accessories - Full Range
Full Specifications
Frequently Asked Questions
Why does the store URL reference 30mm but the product is 28mm?
The product URL contains a data error. The correct backset for the 49425 is 28mm, as confirmed by the Austyle/Superior Brass manufacturer page and the product specification document. Measure your door before ordering to confirm the 28mm backset suits your installation.
What is the difference between the 49425 and the 49429?
The 49425 is a sliding door mortice with dual locking bolts, a 28mm backset, and a 270x22mm faceplate — designed for sliding glass doors and aluminium hinged doors with a shallow backset. The 49429 is a standard entrance mortice with a 60mm backset and a 240x22mm faceplate, suitable for standard hinged timber or aluminium doors. If your door has a 60mm backset, the 49429 is the correct choice. See our guide to measuring your lock backset if you are unsure.
Can the 49425 be used with any digital lever other than the 59407?
The 49425 is confirmed by Austyle for use with the 59407 digital lever only. It is not listed as compatible with the 59405 or 59406 lever sets, which use the 49429 entrance mortice. Do not assume interchangeability — confirm the correct mortice for your specific lever set before ordering.
Does this include the digital lever or any other hardware?
No. This product is the mortice lock body only. The 59407 digital lever set is sold separately and includes the electronic lever assembly, keypad, and fixings. The 59407 product page lists the 49425 as an optional add-on mortice.
What are dual locking bolts and why do sliding doors need them?
Sliding doors move laterally rather than swinging on a hinge, so they require a mortice with locking bolts that engage into the door frame at multiple points to resist lateral force and lifting. The dual bolt configuration of the 49425 is suited to this application. A standard single-bolt entrance mortice like the 49429 is designed for hinged door installations where the bolt engages into a strike plate on the door frame edge.
Additional Information
The GCH store page URL for this product references "30x85mm". This is a data entry error. The correct backset confirmed by the Austyle/Superior Brass manufacturer is 28mm, and the product specification document also states 28mm. The product title on this page and all specification data reflect the correct 28mm measurement. If you are purchasing this product for an existing installation, measure the backset of your current mortice to confirm compatibility before ordering.
The backset is the distance from the edge of the door to the centre of the spindle hole. On a sliding door this is typically shallower than on a hinged door — 28mm is standard for most aluminium sliding door profiles. See our guide to measuring your lock backset before ordering if you are unsure.
The Austyle catalogue also lists mortice code 49421 as a 304SS standard 30mm backset option for the 59407 lever on standard aluminium hinged doors. This product is shown in the locking options image above. If you require the 49421, contact us directly as it may not be listed on the store as a standalone product.
1-year mechanical and 1-year electronic warranty on residential installations, provided by Austyle Architectural Hardware. Proof of purchase required for all claims. Batteries, water ingress from inside the door, and damage caused by incorrect installation or use outside stated specifications are not covered. Returns & Warranty
Austyle 2026 Digital Range Catalogue
Austyle Accessories - Product Brochure
Austyle 2026 Digital Range Catalogue
Austyle Warranty
Warranty Summary
How to Make a Claim
- Retain your proof of purchase — you will need it to make a warranty claim.
- Complete the warranty card supplied in the box (product name, model number, purchase date, store name, receipt number) and keep it in a safe place.
- Contact Terry’s Tradies Pty Ltd at your original place of purchase in the first instance.
- If directed to contact Austyle directly:
Email: info@austyle.com.au
Phone: +61 3 9553 3599
Warranty Registration
No online registration is required. Complete and retain the physical warranty card included in the box along with your proof of purchase.
Exclusions — What This Warranty Does Not Cover
- Commercial installations — this lock is rated for residential use only
- Damage caused by water entering from the inside of the door (the exterior is rated IP55; internal water ingress is not covered)
- Installation on tongue-and-groove doors, where water can penetrate through the groove
- Installation on gates
- Prolonged direct exposure to sunlight or rain — the lock must be positioned under an eave or in a sheltered area
- Damage caused by use of lithium or rechargeable batteries — only high-quality alkaline AA batteries (4 × AA) are supported
- Damage resulting from incorrect installation, misuse, or failure to follow the installation instructions
- Normal wear and consumable items, including batteries
Important Notes
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