Standard Options: Two Back Heights (14"H & 16"H) Oversize Chair (24"sw) Moisture Barrier TB133 (Fire Barrier) Tamper-proof Fasteners Combination Fabrics Features: Open back clean out/closed back aesthetics Chair passes 1200 lb drop test Replaceable Components Steel Inner Construction Dymetrol Suspension Sustainable Materials used in frames Solid White Oak Arms Blanket-wrapped shipping (no cardboard packaging waste) Lifetime Warranty