QUESTION: Regarding your model 37762 long model and model 37772 short model. What is the difference between the long model and the short model? Please explain. Thank you. ANSWER: Please refer to the table under specifications with detailed comparison between the two models. They offer similar features and functions except for the dimensions. Please measure your tub carefully based on the tub requirements under the specifications. For more discussions, options and details about the product, or to order the product, please click here Designed to save bathroom space. The sliding and swivel functions, and double safety locks make shower easier and safe. Shipping is free. This tub mount sliding transfer bench has blow-molded plastic seat and back. The seat platform slides smoothly over polished, high-strength aluminum tubes. Seat and back platform swivels 360 degrees, locking at 90 degrees intervals to allow for easier entry and exit to and from the bench. Rust-proof construction. Entry side of bench mounts to most tub walls for space savings in smaller bathrooms. Easily supports bathers weighing up to 350 pounds (159 kg). Strong suction tipped legs prevent movement on wet surfaces. Note: The optional handle for molded seat only fits the long model NOT the short model. Model 37762 37772 Seat Width: 20.5" 16" Seat Depth: 13.5" 13" Seat Height: 19.25" - 23.75" 16.25" - 21" Actual Slide: 9.5" 9.5" Back Height: 12.5" 12.5" Weight Capacity: 350 lbs. 350 lbs. Tub Requirements   Top Inside Width (A): 23.5" (min) 21" (min)   Bottom Inside Width (B): 17.5" (min) 15.5" (min)   Inside Edge Height (C): 13" - 17.5" 13" - 17.5"   Top Edge Width (D): 2.75" - 5.75" 2.75" - 5.75"