Can you use commercial stacking chairs outside?

Not all stacking chairs are built for outdoor exposure. Chairs rated for outdoor use need UV-resistant resin or powder-coated aluminum frames, non-corrosive hardware, and drainage holes in the seat if they'll be left in the rain. Most upholstered stacking chairs are indoor-only. Check whether a chair is explicitly rated for outdoor use before buying for patio, courtyard, or open-air event applications. FindOfficeFurniture.com specifies indoor/outdoor ratings on every product — call 888-719-4960.