PANELO By Al Waseef Industries Gypsum Ceiling Profiles consists of Furring Channel, Main Channel, GI L Angle & F-Shadow Gap is a versatile and extremely easy to install components used in our Concealed Gypsum Ceiling System and is suitable for most Internal & External applications for residential & Commercial Use. The fully concealed grid system has been designed to simplify and create an easy and fast installation and ceiling alignment process.