Outdoor Solutions NP5041 Easy-Off Economy Spa Cover Lift Fits square, rectangular, octagon, oval and most round spas; Easy to operate - made for one person operation Heavy duty springs assist in removing and putting on cover Powder-coated metal tubing for superior strength & long-lasting corrosion resistance Heavy duty tubing has adjustments for both height and width of spas Clearance Needed: Each Side-5"; End-21 to 23" depending on cover thickness