Twin slot shelving strong enough for heavy storage?

Twin slot shelving strong enough for heavy storage? heavy duty twin slot shelving I only mention that to give a reason why we're not just building some sturdy 2x4 shelving for this room The shelving will need to be somewhat wings138 slot TwinSlot Light-Duty Custom-Build Wall Mounted Shelving System - White · Create a tailored system from components · White anti-bacterial powder-

wings138 slot EAI Twin Slot Wall Mounted Upright Shelving - Pack of 10, White, 1000mm Strong, Heavy Duty Steel Shelf For Shed, Garage, Indoor Storage

maintenance slot Twin Slot Shelving from Morplan ltd Available from Clothes Rails View All Heavy Duty Clothes Rails Reinforced Heavy Duty Clothes Rails Super Heavy Unlike cheaper alternatives, this shelving system is made from thicker, stronger steel Fabricated from thick steel and finished in Dupont Alesta AM™ anti