Bathroom Door Lock (Thumbturn) – Electro Brass (78mm Case / 57mm Backset)
A medium duty bathroom mortice lock designed for internal timber doors in domestic and commercial buildings. The latch is operated by a standard door handle, while the deadbolt is locked and unlocked using a bathroom turn with a 5mm spindle, giving reliable privacy for WC and bathroom doors. The longer 78mm case with 57mm backset is ideal where a deeper lock position or additional handle clearance is required, and the electro brass finish offers a clean, traditional look that complements classic door furniture.
Key Features
- Medium duty bathroom lock for internal timber doors in homes, offices and commercial premises.
- Latch operated by lever handle; deadbolt operated by separate bathroom turn (5mm spindle).
- Medium duty spring – recommended for use with sprung door handles.
- Tested and CE marked to BS EN 12209 for reliable performance and durability.
- Certifire approved (CF5531) for use on 30 and 60 minute fire doors when fitted to a suitable door set.
- 13mm deadbolt throw for positive engagement into the frame, improving privacy and security.
- 78mm case depth with 57mm backset to follower – ideal for deeper lock mortices and doors with wider stile sections.
- Reversible latch bolt for left- or right-handed doors.
- Electro brass square faceplate and keep for a neat, traditional edge detail.
- Corrosion rating Grade 1 – best suited to clean, dry, low-humidity internal environments.
Typical Applications
- Bathroom and WC doors in domestic properties.
- Staff and customer toilets in offices, shops and other commercial buildings.
- En-suite and shower room doors where simple privacy locking is required.
- Refurbishment or replacement of existing 78mm case bathroom locks.
Specifications
| Lock type | Bathroom mortice lock (latch + deadbolt) |
|---|---|
| Lock case depth | 78mm |
| Backset | 57mm (to follower/turn spindle) |
| Centres | 57mm (handle spindle to turn spindle) |
| Bolt throw | 13mm (approx.) |
| Faceplate size (H × W) | 152 × 22mm |
| Faceplate type | Square |
| Keep size (H × W) | 125 × 24mm |
| Case height | 102mm |
| Case thickness | 14mm |
| Operation | Latch by handle; deadbolt by bathroom turn (5mm spindle) |
| Finish | Electro brass |
| Corrosion rating | Grade 1 – clean, dry & low humidity environments |
| Fire rating | 30 & 60 minutes (when used on suitable fire doors) |
| Standards & approvals | CE marked to BS EN 12209:2003, Certifire CF5531 |
| Fixings | 4 × 4.0 × 25mm countersunk screws (recommended) |
Original: $8.15
-65%$8.15
$2.85Product Information
Product Information
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Description
A medium duty bathroom mortice lock designed for internal timber doors in domestic and commercial buildings. The latch is operated by a standard door handle, while the deadbolt is locked and unlocked using a bathroom turn with a 5mm spindle, giving reliable privacy for WC and bathroom doors. The longer 78mm case with 57mm backset is ideal where a deeper lock position or additional handle clearance is required, and the electro brass finish offers a clean, traditional look that complements classic door furniture.
Key Features
- Medium duty bathroom lock for internal timber doors in homes, offices and commercial premises.
- Latch operated by lever handle; deadbolt operated by separate bathroom turn (5mm spindle).
- Medium duty spring – recommended for use with sprung door handles.
- Tested and CE marked to BS EN 12209 for reliable performance and durability.
- Certifire approved (CF5531) for use on 30 and 60 minute fire doors when fitted to a suitable door set.
- 13mm deadbolt throw for positive engagement into the frame, improving privacy and security.
- 78mm case depth with 57mm backset to follower – ideal for deeper lock mortices and doors with wider stile sections.
- Reversible latch bolt for left- or right-handed doors.
- Electro brass square faceplate and keep for a neat, traditional edge detail.
- Corrosion rating Grade 1 – best suited to clean, dry, low-humidity internal environments.
Typical Applications
- Bathroom and WC doors in domestic properties.
- Staff and customer toilets in offices, shops and other commercial buildings.
- En-suite and shower room doors where simple privacy locking is required.
- Refurbishment or replacement of existing 78mm case bathroom locks.
Specifications
| Lock type | Bathroom mortice lock (latch + deadbolt) |
|---|---|
| Lock case depth | 78mm |
| Backset | 57mm (to follower/turn spindle) |
| Centres | 57mm (handle spindle to turn spindle) |
| Bolt throw | 13mm (approx.) |
| Faceplate size (H × W) | 152 × 22mm |
| Faceplate type | Square |
| Keep size (H × W) | 125 × 24mm |
| Case height | 102mm |
| Case thickness | 14mm |
| Operation | Latch by handle; deadbolt by bathroom turn (5mm spindle) |
| Finish | Electro brass |
| Corrosion rating | Grade 1 – clean, dry & low humidity environments |
| Fire rating | 30 & 60 minutes (when used on suitable fire doors) |
| Standards & approvals | CE marked to BS EN 12209:2003, Certifire CF5531 |
| Fixings | 4 × 4.0 × 25mm countersunk screws (recommended) |
