Unlike door locks, crescent locks are specifically designed for PVC and aluminum alloy sliding windows, named for their crescent-shaped bolt. This lock utilizes a spring mechanism to achieve 180° or 360° rotation.
"3H Hardware • Harmony in Diversity" – We anticipate gathering with industry colleagues to explore the boundless possibilities of architectural hardware together! November 5-6, at Booth 202, Hall W1 – We look forward to welcoming you!
3H Hardware Architectural Hardware will seize this visit as an opportunity to continuously intensify technological innovation and intelligent construction, working hand-in-hand with the association to propel the high-quality development of the architectural door and window accessories industry.
Choosing reputable brands often provides more assurance regarding material quality and after-sales service. Although the initial investment might be slightly higher, the durability and reliability offered can prevent the hassle of frequent replacements in the long run.
Deeply understanding and strictly implementing their standard requirements is a wise practice for ensuring building safety at the source and fulfilling safety responsibilities. Equipping every fire door with compliant, high-quality hardware means adding a solid layer of protection to life safety passages.
LTD32
3H INC.
Product Description
Item No. | LTD32 |
Size | 35*52.2*26.8mm |
Application | Sliding door and sliding window |
Material | 304 stainless steel + Nylon Wheels |
Surface Treatment | Natural |
Color | Natural |
Load Bearing | 30 KG/pair |
Function | durable,easy-installation,smooth-operation |
Package | Box |
Specification

Product Description
1. Comply with JG/T 129-2017 Construction Door and Window Hardware- Roller
2. Door rollers work well after 100,000 cycles tested with its biggest capacity.Window rollers work well after tests of 25,000 cycles tested with its biggest capacity.
How to Install the Roller?
a).The connection of the roller and the sash is different due to the difference of the roller and profile.
Decide the way of the installation first,then use the screw or bolt accordingly.
b).The roller and the bottom of the sash must be firmly connected.
