⚡ Quick Answer
A mortise lock fits into a deep pocket cut into the door edge — it combines a latchbolt and deadbolt in one body, offering higher security and durability. A cylindrical lock (tubular/bored lock) fits through two round holes drilled into the door — simpler to install and less expensive, but less secure. For Malaysian main entrance doors, use a mortise lock. For internal bedroom and bathroom doors, a cylindrical lock is sufficient.
Walk through any Malaysian housing project, office block, or commercial shophouse and you’ll see both lock types on different doors. The mortise lock on the main entrance. The cylindrical knob-set on the bedroom door. The bathroom lever on the ensuite. Each was specified for a reason — or at least, it should have been. Most people only discover which lock is wrong for their door after it fails. This guide explains exactly what separates a mortise lock from a cylindrical lock in Malaysia, where each belongs, and how to choose the right door lock set for every door in your home or office.
What Is a Mortise Lock?
A mortise lock is a lock mechanism that is installed inside a deep rectangular pocket — called a mortise — cut into the edge of the door. The lock body (case) sits entirely within the door thickness. On the face of the door, only the trim plate (escutcheon), handle or knob, and keyhole are visible. The locking mechanism is fully protected inside the door body.
A standard mortise lock case contains both a spring latchbolt (the angled bolt that retracts when the handle is pressed, allowing the door to close) and a square deadbolt (the flat bolt that extends when the key is turned, providing the security lock). Both functions are integrated into one body — one lock case handles latching and deadbolting simultaneously.
Mortise lock key fact for Malaysia: The standard mortise pocket size in Malaysian timber doors is 60mm wide × 180–210mm tall × 25mm deep. Always confirm the lock case dimensions match your existing mortise before ordering a replacement.
What Is a Cylindrical Lock?
A cylindrical lock (also called a tubular lock, bored lock, or cylindrical lock set) is installed by drilling two cylindrical holes through the door — one through the door face (for the cylinder and handle mechanism) and one through the door edge (for the latch bolt). The components are inserted through these round holes and secured with screws, without requiring any routing or chiselling of the door.
Unlike a mortise lock, a cylindrical lock only provides a latchbolt — the spring-loaded angled bolt that retracts when the handle is turned. For deadlocking (key-operated security lock), a cylindrical lock set requires a separate deadbolt cylinder, usually installed above or below the main latch. Some cylindrical lock sets include a push-button or turn-button privacy lock on the inside handle — common in Malaysian bathroom and bedroom doors.
Mortise Lock
Installed by: Routing a rectangular pocket into door edge
- Latchbolt + deadbolt in one body
- Higher security & durability
- Requires 35mm+ door thickness
- Best for: main entrance, external doors
- Cost: RM 80–600 depending on grade
Cylindrical Lock
Installed by: Drilling two round holes through door
- Latchbolt only (no integrated deadbolt)
- Easier to install, lower cost
- Suitable from 28mm door thickness
- Best for: internal doors, bedrooms, bathrooms
- Cost: RM 40–300 depending on grade
Mortise Lock vs Cylindrical Lock — Direct Comparison
| Feature | Mortise Lock | Cylindrical Lock |
|---|---|---|
| Installation method | Routed rectangular pocket in door edge | Two round bored holes through door |
| Integrated deadbolt | ✓ Yes | ✗ No (separate required) |
| Security level | High — bolt engages full door frame | Medium — latch only, weaker to forced entry |
| Min. door thickness | 35mm (45mm recommended) | 28mm minimum |
| Suitable for hollow-core doors | ✗ No | ✓ Yes |
| DIY installation | ✗ Carpenter required | ⚠️ Possible with drill |
| Durability / cycle life | Very high — 500,000+ cycles | Medium — 100,000–250,000 cycles |
| Typical Malaysian application | Main door, office entrance, external doors | Bedroom, bathroom, internal office doors |
| Price range (Malaysia) | RM 80 – 600 | RM 40 – 300 |
| Available with smart/digital upgrade | ✓ Smart mortise sets available | ⚠️ Limited options |
Types of Mortise Locks Available in Malaysia
1. Standard Mortise Lock Set (Lever Handle)
The most common mortise lock specification in Malaysian residential and commercial properties. A lever handle on each side of the door operates the latchbolt. The key cylinder on the outside operates the deadbolt. A thumbturn on the inside provides deadbolt operation without a key from inside. Available in single cylinder (thumbturn inside, key outside) and double cylinder (key both sides — for doors with adjacent glass panels).
2. Mortise Deadlock (Key Both Sides)
A mortise lock case containing only a deadbolt — no latchbolt. The door is latched by a separate latch mechanism or is only deadlocked. Used in Malaysian commercial properties for storeroom doors, server rooms, and any door that is only locked when unoccupied. Provides maximum deadbolt security without a spring latch.
3. Mortise Night Latch
A mortise lock with a spring latchbolt that deadlocks automatically when the door closes — the outside handle only operates the latch when the key is used. Common in Malaysian apartment and condominium unit entrance doors where auto-deadlocking on door close is required by building management or fire safety specifications.
4. Heavy-Duty Commercial Mortise Lock (Grade 1)
A mortise lock rated for high-frequency commercial use — typically specified for Malaysian office entrance doors, hotel room doors, and any door completing more than 100 open/close cycles per day. Solid brass or stainless steel case, anti-pick and anti-drill cylinder, reinforced latch and deadbolt. Significantly longer service life than residential-grade mortise sets.
Types of Cylindrical Locks Available in Malaysia
1. Passage Set (No Lock)
A lever or knob handle set with a latch but no locking mechanism. The handle operates the latch from both sides at all times — no key or privacy lock. Used in Malaysian homes for hallway doors, pantry doors, and any internal door that should never be locked. The most affordable cylindrical set type.
2. Privacy Set (Bathroom / Bedroom)
A cylindrical set with a push-button or turn-button privacy lock on the inside handle — locks the latch from inside, preventing the handle from being operated from outside. An emergency release pin on the outside allows the lock to be overridden from outside in emergencies. The standard specification for Malaysian bathroom and bedroom doors.
3. Entry Set (Keyed Cylinder)
A cylindrical set with a key cylinder on the outside handle and a thumbturn or push-button on the inside. Provides key-operated locking from outside. Used on Malaysian utility room doors, laundry rooms, and light commercial internal doors where a key lock is needed but a full mortise is not required. Note: the latch-only design means this set provides less forced-entry resistance than a mortise lock — add a separate surface deadbolt if security is a concern.
How to Choose the Right Door Lock Set for Malaysian Homes & Offices
🎯 Decision Summary
Main entrance door or external door → mortise lock set. Internal bedroom or bathroom door → cylindrical privacy set. Internal door needing a key lock → cylindrical entry set. Hollow-core internal door → cylindrical set only (mortise cannot be installed in hollow-core).
Identify your door type and thickness
Measure door thickness. Solid-core timber or steel doors 35mm+ → mortise lock viable. Hollow-core doors → cylindrical lock only — mortise installation would destroy the door structure. Most Malaysian condominium unit entrance doors are solid-core timber, typically 40–45mm thick.
Determine the security requirement
Main entrance, external, or security door → mortise lock (integrated deadbolt, superior forced-entry resistance). Internal bedroom, bathroom, WC, or utility door → cylindrical set is adequate — full deadbolt security is not needed for internal door applications.
Check your existing door preparation
If the door already has a mortise pocket cut into the edge → specify a mortise lock matching that pocket size (measure width, height, and depth). If the door has round bored holes → cylindrical lock set to the correct backset (54mm or 60mm from door edge to hole centre — measure before ordering).
Select handle style and finish
Lever handle (most common in Malaysia — easier for elderly and mobility-impaired users), knob handle (traditional style), or D-pull (commercial and minimalist residential). Finish: satin stainless (best for Malaysian humidity), matte black (modern aesthetic), polished brass (traditional), antique bronze. Match finish to door hinges and other hardware throughout the property.
Specify cylinder type and key system
Single cylinder (key outside, thumbturn inside) — standard for all Malaysian residential main doors. Double cylinder (key both sides) — only for doors with glass panels where reaching through broken glass to turn a thumbturn would bypass the lock. Master-key system — for Malaysian offices and commercial properties managing 5+ doors, allowing one master key to open all while individual doors have their own unique keys.
Malaysia-specific note: Double-cylinder deadbolts (key required on both sides) are not recommended for Malaysian residential bedroom or sleeping area doors — in a fire emergency, occupants cannot exit quickly without finding a key. Single cylinder with thumbturn inside is the UBBL-compliant and safest specification for all Malaysian sleeping area doors.
Need a Door Lock Set for Your Malaysian Property?
Acts ID Hardware stocks mortise and cylindrical lock sets in residential and commercial grades — with lever handles in satin stainless, matte black, and brass finishes. Free delivery above RM 300.
Lock Set Grades & Finishes for Malaysian Conditions
Door lock sets in Malaysia are available in three quality grades, and the right grade depends on usage frequency and environment — not just budget.
Residential Grade
Rated for private home use — typically 100,000–250,000 operating cycles. Suitable for Malaysian homes with standard usage (less than 30 open/close cycles per day). Zinc alloy or low-grade brass body. Adequate for internal doors and light-traffic entrances.
Commercial Grade (Medium Duty)
Rated for 250,000–500,000 cycles. Solid brass or zinc alloy with heavier components. Standard specification for Malaysian small office, retail, and light commercial doors. Anti-pick cylinder typically included as standard at this grade.
Heavy-Duty Commercial Grade (Grade 1 Equivalent)
Rated for 500,000–1,000,000 cycles. Solid stainless steel or solid brass body. Required for Malaysian hotel room doors, hospital doors, school entrance doors, and any high-frequency commercial application. Anti-pick, anti-drill, and anti-bump cylinder protection.
Recommended Finishes for Malaysian Climate
- Satin stainless steel: Best overall for Malaysian humidity — resists tarnish, scratches, and cleaning chemical exposure. Recommended for all external-facing Malaysian door hardware.
- Powder-coated matte black: Durable finish for modern Malaysian interiors. Holds up well indoors — avoid on external doors with direct rain or sun exposure.
- Polished brass: Traditional appearance but requires maintenance — tarnishes in humid conditions without regular polishing or protective lacquer coating.
- PVD-coated gold/brass: Physical vapour deposition coating provides significantly better humidity and scratch resistance than electroplated brass — the correct specification for Malaysian coastal properties wanting a brass aesthetic without the maintenance.
Where to Buy Door Lock Sets in Malaysia
Acts ID Hardware supplies a full range of mortise and cylindrical door lock sets across residential, commercial, and heavy-duty grades — including lever handle sets, knob sets, and entry sets in multiple finishes. We stock products from Häfele and other established European hardware brands certified for Malaysian building specifications.
Browse the door lock set range on our site, or WhatsApp our team at +6013-790 1266 with your door thickness, door type, and application for a specific recommendation. We ship from Ulu Tiram, Johor, with free delivery on orders above RM 300 (West Malaysia).
For digital and smart lock options for Malaysian main doors, read our Smart Lock vs Digital Lock vs Deadbolt guide. For glass door lock specifications, see our Glass Door Hardware Malaysia 2026 guide.
About the Author
Acts ID Hardware — Knowledge Hub Team
Acts ID Hardware is a specialist hardware supplier based in Ulu Tiram, Johor, Malaysia, with over a decade of experience supplying door hardware, furniture fittings, and cabinet hardware to homeowners, interior designers, and contractors across Malaysia. All Knowledge Hub articles are written and reviewed by our in-house hardware specialists based on hands-on product experience and Malaysian building practice.
About Acts ID Hardware · WhatsApp: +6013-790 1266 · Ulu Tiram, Johor, Malaysia
Frequently Asked Questions
Common questions about mortise locks and cylindrical locks in Malaysia, answered by Acts ID Hardware.
A mortise lock is installed inside a deep rectangular pocket (mortise) cut into the door edge — it houses the latchbolt, deadbolt, and lock mechanism in one integrated body. A cylindrical lock (also called a tubular or bored lock) fits into two round holes drilled through the door face and edge — it is simpler to install and less expensive but provides less security and is less durable under heavy use. For Malaysian main entrance doors, a mortise lock is the correct specification.
For Malaysian main entrance doors (timber, solid core, or steel), a mortise lock set is the recommended choice — it provides combined latch and deadbolt in one body, superior resistance to forced entry, and longer service life. Cylindrical locks are suitable for internal bedroom and bathroom doors where security is secondary to convenience and cost. Never use a cylindrical passage or privacy set as the sole lock on a Malaysian main entrance door.
Yes, but it requires routing a mortise pocket into the door edge, which must be done by a qualified carpenter. The door must be at least 35mm thick (preferably 45mm) to accommodate the mortise lock body. If the existing door is hollow-core, a mortise lock cannot be installed — the door itself would need to be replaced with a solid-core or solid-timber door first. WhatsApp our team at Acts ID to confirm compatibility before purchasing.
A standard mortise lock body requires a door thickness of at least 35mm, with 45mm being the standard for Malaysian residential and commercial timber doors. Most mortise lock bodies are 20–25mm wide — the door must be at least 10mm wider than the lock body on each side for structural integrity. Always confirm the lock body dimensions against your door thickness before purchasing. Acts ID can advise on compatibility — contact us via WhatsApp with your door measurements.
Mortise lock sets in Malaysia range from RM 80–180 for basic residential grades to RM 250–600 for commercial-grade sets with solid brass or stainless steel bodies and anti-pick cylinders. Cylindrical lock sets start from RM 40–80 for basic models. Professional installation by a locksmith adds RM 80–150 depending on location (Klang Valley and Johor rates vary slightly). Acts ID stocks mortise lock sets across all grades — browse our range or WhatsApp for a quote.
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References & Further Reading
Not Sure Which Lock Set Is Right for Your Door?
Tell us your door thickness, material, and application. Our team will confirm the right mortise or cylindrical lock set — and the correct backset — before you order.