Niczuk ventilation clamp with 450 mm lining, model 81210245000

The Niczuk ventilation clamp with 450 mm lining, model 81210245000, is a lined duct clamp designed to secure circular ventilation ducts and pipes. It provides a fixed mounting point that stabilizes duct runs, protects duct surfaces from damage with its 450 mm lining and helps reduce vibration transfer. The clamp is suitable for use in residential and commercial HVAC installations where a lined clamp is required to maintain duct integrity and consistent sealing.

Advantages

This lined clamp protects duct surfaces from abrasion and deformation, extending the service life of ventilation ducts. The 450 mm lining ensures an even contact area around the duct, improving load distribution and sealing performance. Its construction reduces vibration transmission, contributing to quieter operation of ventilation systems. The clamp is designed for straightforward installation and provides a reliable anchor point for hangers and supports.

Suitable for

• Securing circular metal or insulated ventilation ducts
• HVAC installations in residential buildings
• Commercial ventilation systems requiring lined supports
• Areas where vibration isolation and surface protection are important

Key specifications

• Lined clamp for ducts with 450 mm lining width
• Designed for circular duct profiles commonly used in ventilation systems
• Provides surface protection to prevent abrasion and deformation
• Reduces vibration transmission between duct and support
• Suitable for indoor HVAC installations in residential and commercial settings

How to use

Select a mounting location that provides adequate support for the duct run and aligns with existing hangers or building structure. Position the lined clamp around the duct so the lining contacts the duct surface evenly. Secure the clamp using appropriate fasteners compatible with the mounting substrate, ensuring the clamp holds the duct firmly without over-tightening and compressing the lining excessively. Adjust the clamp and any associated hangers to achieve the correct duct slope and alignment before final tightening.

Usage recommendations

Use corrosion-resistant fasteners appropriate to the installation environment and follow local HVAC installation standards. Inspect the lining periodically for wear or compression and replace the clamp if the lining no longer provides effective protection. Avoid over-tightening to prevent damage to insulated ducts and ensure vibration-reduction benefits are maintained.