LMB Coil Extension Assist Spring — Size B

High-quality LMB Coil Extension Assist Spring in Size B — engineered to provide smooth, reliable lift assistance for a wide range of domestic and commercial applications. Ideal as a direct replacement where a Size B extension coil is required, this spring reduces operator effort and helps prolong the life of hinges, cables and lifting mechanisms.

• Durable construction: Made from hardened spring steel with a corrosion-resistant finish for long service life.
• Reliable performance: Precisely wound for consistent tension and smooth operation across repeated cycles.
• Versatile use: Suitable for doors, lids, hatches, gates, toolboxes and other applications that call for a Size B extension assist spring.
• Easy replacement: Designed as a like-for-like swap for existing Size B extension coils — confirm measurements before ordering.

How to choose: check the relaxed and extended lengths, wire diameter and overall coil dimensions against your existing spring to ensure you select the correct Size B replacement. If unsure, contact us with your measurements and application details for assistance.

Important safety note: extension springs store energy and can be hazardous if improperly handled. Installation should be carried out by a competent person using appropriate tools and protective equipment. Isolate power and secure moving parts before attempting replacement.