For sliding and Hinged doors. A threshold drain for sill usage only featuring a concealed channel section system with an integrated sill suitable for all door track types. Allows door sills to be drained while having internal and external floor surfaces with no step down. Suitable for tiles up to 12mm thick. Please be aware that depending on the installation environment, for a pool installation or close to a surf beach, you may need to have your stainless steel grates electropolished.