SPECIFICATIONS: Seat Size: 17.75" x 14.75". Seat Height: 18.25" - 22.25". Base Length: 33" - 34" (From outside-leg tip to outside-leg tip). Base Depth: 18.5" - 20". Max Tub Clearance: 18.5". Back Height from Floor: 31.75" - 35.75". Sliding Distance: 9.75". Weight Capacity: 400 lbs. (Dimensions are approximate and subject to change without notice; generally within ±0.75" tolerance). LONGER LENGTHS AVAILABLE: #77311 (Base Length 39"-40") & #77391 (Base Length 48"-49"). OPTIONAL ARMREST AVAILABLE: #75003 (Single) - (NOTE: Armrests are not designed to bear body weight. They are only intended to rest your hands or arms on). ***This is a NON-RETURNABLE hygiene item and cannot be returned once opened. Please measure your bathroom and bathtub carefully to make sure this product will fit your specific needs.***