Timberoll 300N is a robust bottom rolling system for large external sliding panels up to 300kg. Its adjustable double bogie is designed for easy installation inside aluminium and timber frames. The stainless steel body with acetal tyred precision bearings, operates quietly on an aluminium rail, making it perfect for residential and commercial applications. It has self levelling, end adjustment and can support multiple panels on single or parallel lines of rail, providing smooth, space efficient large openings with excellent performance and application flexibility.