Are my walls strong enough for Twin slot shelving system?

Wickes Twin Slot White Shelf Bracket twin slot racking The system is simple All you need are the uprights to fix to the wall and the brackets to slot in ready for the shelf to go on top Twin Slot Shelving twin slot basket Twin slot shelving uprights used to create adjustable wall shelves Suitable for home, garage, office and commercial use

twin spin deluxe slot The highest quality and probably the lowest priced in Australia twintrackdouble slot adjustable shelving system 32mm pitch, (pitch is the measurement from