The Aardwolf Galvanized Slab Rack - consists of a pair of galvanized steel rails 3 meters long, together with galvanized square steel tube posts. The square post can be positioned anywhere along with the rack. All posts are manufactured from square tube steel with a minimum yield strength of 345Mpa, ensuring safety for the vertical storage of slab bundles.TSC - Tait Sales & Consulting, is your trusted source and a Premier Authorized Aardwolf America Distributor. We supply 100% authentic Aardwolf equipment complete with full factory warranty protection.>more Features: The maximum number of marble or granite slabs that can be safely stored per bay at a 4° lean depends on the slab thickness and dimensions. Aardwolf has developed a simple calculator specifically for the users to calculate the slab storage capacity. See link below. Additional posts available in 5 standard heights of 800mm, 1200mm, 1400mm, 1600mm, 1800mm. Additional Post Bases sold separately. Specifications: Metric (mm-kg) Imperial (inch-lb) Galvanized steel rail 2979x164x165 117.3"x6.4"x6.5" Rack height 165 6.5" Square hole 52x52 2"x2" Increment 57 2.2" Square tube post 50x50 2"x2" Posts wall thickness 5 0.2" Square rubber cap 52x52 2"x2" Timber battens per rail 50x25 2"x1" Net weight 78/PCS 171 Gross weight 78.3 172 Packaging dimension 2980x165x165 117.3"x6.5"x6.5" To view, the Slab Rack Storage Calculator click here This tool will help you decide how many posts and what type of posts you may require. Warning: Do not use the Aardwolf Slab Rack Storage Calculator to calculate the storage capacity of competitors posts as they may use posts with a different profile and steel of lower yield strength.