What makes a guest chair 'commercial grade'?

Commercial-grade guest chairs are tested to BIFMA X5.4 standards (seating for general use — not just the user's private chair) covering static load, drop, arm load, back load, stability, and durability cycling. They use higher-density foam, heavier steel or aluminum frames, commercial-rated upholstery (100,000+ double rub rating), and longer warranty terms than consumer furniture. For any office with multiple users or visitors, commercial-grade is the minimum specification. OfficeFurniture2go.com — call 1-800-460-0858.