Gas regulation terminal. Gas fired appliances must have a gas regulation termination.
Great product Easy to fit, good quality, great service
Good Product & Excellent Service As with a previous order the flue terminal supplied appears far superior in quality to the original “own brand” terminal fitted by British Gas (which had to be replaced as it corroded and snapped off in the wind). The item was delivered well-packaged within 24 hours of my payment being received.