Are twin slot brackets strong enough to support a shelf layout?

Are twin slot brackets strong enough to support a shelf layout? twin slot uprights Create modular displays for retail and home with Twin Slot Shelving Systems Slot retail shelving and twin slot accessories including brackets and uprights twin slot White antimicrobial twin slot upright provides an easily adjustable mounted system in order to fit shelves

twin slot TWIN SLOT UPRIGHTS & BRACKET SYSTEM · SAPPHIRE DOUBLE SIDED UPRIGHT SCREW JACK · TWINSLOT UPRIGHT · TWINSLOT BRACKET · BLADE SHELF BRACKET – EDSS E-32 COMPATIBLE

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