FlexiFlange: Revolutionizing compliant waterproofing and drainage installations. This patented flexible leak control flange is the first of its kind to achieve both NCC Deemed to Satisfy and Watermark certification. Australian Made and Designed by Stormtech, FlexiFlange allows installers to bend the flange up the wall, ensuring a perfect, leak-proof seal and maintaining the required membrane adhesion, even in tight spaces. Compatible with DN100 pipe and all Stormtech drainage outlets.