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IN STOCK Retrofit 3-Point Locking System for Hinged Doors

Triple Lock (Retrofit 3-Point Lock)

Product Introduction

This high-security triple lock kit is engineered to upgrade standard single-point locks into robust 3-point multi-point locking systems. Designed for modern slimline and security fenestration frameworks, the system utilizes synchronized top and bottom vertical auxiliary rods driven by the central mortise to secure the door sash at three critical structural points simultaneously, maximizing defense against jemmying and forced entry.

Typical Applications

  • High-specification aluminum hinged and sliding security mesh doors.
  • High-security stainless steel mesh screen doors compliant with global residential safety standards.
  • Commercial and residential narrow-profile architectural entrance doors.
Retrofit onto Existing Door
Single Action Operation
Rigid Rods or Flexible Cables

Product Specifications

ItemDescription
Product Type3-Point Multi-Point Security Locking System / Triple Lock Kit
Surface FinishIndustrial corrosion-resistant zinc plating / black passivated coatings.
Locking Points3 Points (Central deadbolt/latch + Top auxiliary hook/bolt + Bottom auxiliary hook/bolt).
Kit Components2x Auxiliary lock mechanisms, 2x Vertical connecting rods, 2x Stainless steel strike plates, 1x Rod guide/cover bar, and heavy-duty fixing fasteners.

Key Features & Benefits

  • Retrofit onto existing door – No need to replace the whole door.
  • Adds two extra locking points – Top and bottom bolts resist prying and spreading attacks.
  • Single action operation – One turn of the key or lift of the handle engages all three points.
  • Rigid rods or flexible cables – Rods for timber/steel doors; cables for narrow aluminium frames.
  • Adjustable bolt positions – Custom spacing to match door height.
  • Compatible with many cylinders – Fits common euro profile cylinders.

Rod type (rigid or cable), bolt spacing, backset, and cylinder compatibility are customisable from your door specifications and drawings. For other multipoint systems (e.g., 5-point, sliding door locks), please contact us for detailed discussion and custom solutions.

Downloads

Brochures, CAD drawings, and installation guides will be available for download soon.

Material Standards

Material testing standards and certifications will be updated soon.

Fabrication & Application Standards

Fabrication and application testing standards will be updated soon.

Manufacturer’s Certification

Manufacturer certification details will be updated soon.

Calculators

Product-specific calculators will be available soon.

Frequently Asked Questions

Product-specific FAQs will be added soon. Please check our main FAQ page for general inquiries.

CUSTOMER TESTIMONIALS


Hot-dip galvanized steel grating is easy to install, gratings are strong, slip-resistant, and rust-proof. The product is strong and well-made. They have their own factory with 20 years+, Had sent me photos during shipping. Very satisfied! Will definitely order from them again.

DW
David Wilson
Botany Street, Marrickville, New South Wales

Absolutely love this fence! The material is thick, galvanized well and anti-rust. Super easy to assemble, strong and stable for outdoor use. The team is very responsive and helpful throughout the whole order. 100% satisfied and will be a long-term buyer.

CA
Chloe Anderson
Oak Street, Los Angeles

Bulk order of mesh finished perfectly. Uniform size and high hardness, suitable for construction and fencing projects.

KS
Khalifa Salem
Sharjah, Industrial Area 5, United Arab Emirates

These invisible decorative manhole covers are beyond my expectations. Fine welding, smooth edges and premium material. It can be fully covered with tiles to achieve a completely invisible effect, greatly improving the overall aesthetics of the project. The supplier is responsive and reliable, will definitely reorder.

OS
Olivia Smith
Ballarat Road, Deer Park, Victoria

The chain link fence we ordered is absolutely fantastic in every detail. The galvanized coating is even and thick, providing great anti-rust and weather resistance for long outdoor service. The mesh structure is tight and uniform, very tough and not easy to deform. The whole cooperation experience was wonderful, the supplier replied quickly and arranged everything professionally. Highly recommended for all fencing projects.

CM
Chris Mitchell
Smith Street, Darwin, Northern Territory

Perfect fit and excellent quality. This security door hinge is solid, durable and beautifully finished. It greatly improves door stability and safety. Smooth communication and fast delivery. Very happy with my purchase.

WS
Watanabe Shun
Taito City, Tokyo, Japan

The temporary fence is made of high-quality metal material with solid overall structure. The welding work is neat and firm, not easy to bend or damage. Hot galvanized surface provides great rust and corrosion resistance, perfect for outdoor construction sites, events and public isolation. The whole set is easy to move, assemble and store. The supplier is professional with fast reply and thoughtful service. I am very satisfied with this purchase.

HM
Harry Mitchell
Canberra, Australian Capital Territory, Australia

Very happy I chose this linear steel grating! The design is practical, the gaps are well spaced for quick drainage, and it’s really easy to install. The material quality is top notch, tough and weather-resistant for long outdoor life. The service was warm and professional, always quick to reply and helpful. Will absolutely order again for our next project.

LT
Luke Taylor
Queen Street, Brisbane, Queensland

Amazing pets mesh! Durable, lightweight and extremely functional for all pet containment needs. The construction is solid, not easy to fray or deform. Perfect for garden fencing, animal pens and outdoor protection. Great communication throughout the whole order. 100% trustworthy supplier, love this product!

JA
Jessica Allen
Tucson, Arizona

Perfect fence for my outdoor space! Very stable, easy to assemble and incredibly durable. The build quality is amazing, no bending or damage at all. It greatly improves my yard security and overall appearance. Friendly support and fast delivery, 100% recommended.

TK
Thomas King
Perth, Western Australia, Australia