The Midgård installation support must always be used when installing Purus floor drains into concrete floors. The Midgård support ensures that the installation meets the recommended tolerance requirements of +/- 2mm for floor drain installations, according to current industry guidelines. The legs are set for an installation height of 172mm; but can also be adjusted from 82mm to 230mm. The support feet have four different installation options: nail gun and washer; screw and plug; nail plug; EPS fastener and nail; or alternatively can be fixed and fastened. The Midgård support is designed to fit all plastic, stainless steel and cast iron Purus floor drains with a grate diameter of 130mm and 150mm, as well as gullies in the S-Series. For installation of the Saga and Rot floor drains, the Bifrost support is recommended.