Aquaproof wetroom waterproofing outlet sleeves are supplied pre-made with an elasticated hole to seal around water inlet pipes. 120mm x 120mm.As part of the Aquaproof wet room tanking system these outlet sleeves are supplied pre-made with elasticated hole to seal around water inlet pipes. 120mm x 120mm. All the Aquaproof Products have been independently tested and are CE Approved. Full instructions supplied with the product and a pictorial description of application is viewable on our How to Tank a Wetroom Article. To find out the amount of waterproofing/tanking materials you require to tank your wet room please refer to our Wetroom Waterproofing Material Calculations Guide which will open in a new tab.