ACO InDoor is a high quality, low profile mat well designed to help reduce the risk of slip accidents in a range of domestic and commercial properties. Dimensions Length: 600mm Width: 400mm Depth: 12mm Weight: 2.8kgs Description ACO InDoor consists of a tough corrosion resistant aluminium frame and has a choice of two hardwearing mat finishes to complete the assembly. The system is available in two sizes, 600mm x 400mm & 750mm x 500mm, and is designed to fit most popular tile sizes.image The system has a fitted height of 12mm and fits directly onto the floor, flush with your choice of floor coverings.