The Double Elephant NO H-003 3 Lever Wooden Mortise Door Lock is a reliable and cost-effective locking solution designed for internal wooden doors. Manufactured with precision in Thailand, this 3-lever mortise lockset offers standard security, easy installation, and a reversible latch, making it ideal for homeowners, DIY enthusiasts, and professionals seeking a dependable lock for interior applications such as bedrooms, bathrooms, or closets.
 
Key Features
3-Lever Mechanism: Provides standard security with a 3-lever system, suitable for internal doors requiring moderate protection.
Reversible Latch: Easily adjustable for left- or right-handed doors without disassembling the lock, ensuring versatile installation.
Durable Construction: Crafted from high-quality materials, including steel and brass components, for reliable performance and resistance to wear.
100% Original from Thailand: Authentic Double Elephant product, known for its quality craftsmanship and affordability.
Compact Design: Fits seamlessly into wooden doors, providing a flush, sleek finish that enhances aesthetics.
Easy Installation: Supplied with all necessary fittings, including screws and a strike plate, for straightforward DIY or professional setup.
Two Keys Included: Comes with two standard keys, with additional replacements available from locksmiths or hardware stores.
 
Specifications
Model: NO H-003 3 Lever Mortise Lockset
Brand: Double Elephant
Lock Type: 3-Lever Mortise Sashlock
Material: Steel with Brass Components
Finish: Polished Brass or Chrome (depending on model)
Backset: 45mm (distance from door edge to center of keyhole)
Case Size: Approx. 76mm (3 inches)
Door Thickness Compatibility: 35–50mm (standard wooden doors)
Weight: Approx. 400–500g (14.1–17.6 oz)
 
Package Contents:
1 x Double Elephant NO H-003 Mortise Lock
2 x Keys
1 x Strike Plate
Installation Screws
Instruction Manual
 
Benefits
Standard Security: Offers adequate protection for internal doors, restricting access for privacy or safety in homes or offices.
Versatile Application: Reversible latch and compact size make it suitable for various wooden door types and configurations.
Aesthetic Appeal: Flush mortise design complements door aesthetics, with brass or chrome finishes matching common door hardware.
User-Friendly: Simple installation process and reversible latch save time and effort for both DIYers and professionals.
Cost-Effective: Provides reliable performance at an affordable price, making it a practical choice for budget-conscious buyers.
 
Applications
Ideal for internal wooden doors in residential settings, such as bedrooms, bathrooms, or storage rooms.
Suitable for light commercial use, including office partitions or private workspaces requiring basic security.
Perfect for DIY projects or renovations where a dependable, easy-to-install lock is needed.
 
Usage Instructions
Prepare the door by cutting a mortise pocket to accommodate the lock body, following the provided template.
Adjust the latch orientation (left or right) by reversing the latch bolt, if necessary, before installation.
Insert the lock body into the mortise pocket and secure it with the provided screws.
Install the strike plate on the door frame, ensuring proper alignment with the latch and deadbolt.
Test the lock operation with the keys and handles to confirm smooth functionality.
Clean the lock regularly and lubricate the mechanism with graphite-based lubricant to maintain performance.
 
Safety Precautions
Ensure the lock is properly installed to prevent misalignment or operational issues.
Do not use excessive force when turning the key to avoid damaging the lever mechanism.
Keep keys in a secure location and avoid duplicating them without authorization.
For external doors, consider a 5-lever mortise lock meeting BS3621 standards for higher security.
 
Why Choose Double Elephant NO H-003?
The Double Elephant NO H-003 3 Lever Mortise Lock combines affordability, ease of use, and reliable performance, making it an excellent choice for internal wooden doors. Its reversible latch, durable construction, and authentic Thai craftsmanship ensure hassle-free installation and dependable security for privacy-focused applications. Backed by Double Elephant’s reputation for quality, this lockset delivers exceptional value for homeowners and professionals alike.