Chamber Restrictor Ring - Product Review (Video)

Ensuring compliance with UK Building Regulations Part H, the Clark-Drain CLKS499 Chamber Reducing Ring reduces the clear opening of 450mm inspection chambers to 300mm, making it suitable for chambers deeper than 1.2m.

Key Benefits

• Meets building regulations

• Simple installation process

• Compatible with Clark-Drain covers:

  • CLKS452 – 450mm Circular Cover

  • CLKS456 – 580mm Square Cover

  • CLKS450SR & CLKS450SR/46SL – 450mm Square Recessed Covers

Easy Installation

1. Remove Cover – Unscrew and lift it out.

2. Insert Restrictor Ring – Align and push it into place.

3. Replace Cover – Secure it back into the frame.

For a step-by-step demonstration, check out our video tutorial.