Profiles for Sliding Windows and Doors are available with brush seals, which are used along the entire length of the window profile for protection against dust and water. NCL Wintech India Ltd. Manufactures Profiles for Sliding Windows and Doors.NCL Wintech India Ltd. Also supplies wide range of UPVC Profiles under different series. Profiles for Sliding Windows and Doors are designed with a cover, hence additional rail channel cover profiles are not required to recover the frame on the sides and top. Steel reinforcement along the frame and window sash ensures high structural ability and allows for long span construction. It comes under the 1-60 Sliding series.