QUESTION: does the whole bed rise in height ANSWER: Yes, the whole bed raise up manually using the crank. This is the feature of the semi-electric bed. For more discussions, options and details about the product, or to order the product, please click here One of the quietest and lightest hospital beds for patient home care with fewer parts and less chance to go wrong. The revolutionary bed and moter design provide the ultimate in quiet, smooth operation. Shipping is free. This revolutionary Semi-Electric Hospital Bed (larger image) can be easily converted to the Full-Electric Hospital Bed with extra parts. The piston driven motor (compared to gear driven motor on other products in the market) provide higher safety during operation. The motor can be removed for the bed frame to get cleaned easily with detergent or chemical. Complete welded steel frame construction. The head and foot section can be raised or lowered simultaneously or independently with one hand control. During a power failure the motor unit can lower both the head and foot section with just a single standard 9 volt battery. The semi-electric hospital bed can be assembled or disassembled easily with just half components. No tools are required. Designed to meet the requirements of applicable HCPCS codes. UL 73 and CAN/CSA C22.2 No. 68-92 approved. Bed also available as a package with 80" x 35" x 7" innerspring mattress and either full rails or head half rails. Bed packages also available with mattresses that meet the requirements of California Technical Bulletin #603 (fire retardant for Nursing Facilities). For longer hospital bed up to 84", Bed Extender (609-0084-000) is available to extend the bed frame. For longer mattress to go with extended bed frame, you can choose the 84" innerspring mattress for longer sleep surface. Warranty: Welds: Limited Lifetime. All other components: Two Years. Height Range (Deck Level): 15" - 24" Overall Length: 87" Bed Width at Head End: 36" Bed Weight (bed and motor): 154 lbs Weight Capacity: 450 lbs.