Our Traditional Bore Cover has become the new industry standard because it is thicker, stronger, has a one piece construction which means no joins no seems and no rivets and has a hi-tech air vent that is water proof from any angle. It is 1.2mm thick and is galvanized. We are proud to have introduced a new higher quality standard at a new lower price. The sizes listed is the diameter of your concrete bore liner not the bore cover. The bore cover is slightly wider to fit over the concrete liner. The standard sizes are 42″, 48″ and 54″ which in metric is 1050mm, 1200mm, 1350mm. If you require a custom size give us a call or email. The top of the cover has a condensation cap to allow air flow into the well. The cover’s round base slides over the bore. All our Bore Covers are manufactured in Australia and are own unique design.