Durable Aluminum Frame: Crafted from rust-resistant aluminum alloy, this hot tub lid lifter ensures long-lasting durability and maintains an elegant appearance even in harsh weather conditions.Hydraulic Heavy-Duty Support: Equipped with a hydraulic lifting mechanism and three adjustable thickness settings, it enables effortless opening and closing of heavy hot tub lids for a comfortable spa experience.Universal Fit Compatibility: Designed to fit most hot tubs up to 96 inches wide and 30-42 inches high, accommodating various spa lid shapes and sizes with flexible installation options.Easy No-Drill Installation: Features a bottom-mounted design requiring no drilling; includes all necessary parts, instructions, and installation video for a quick 30-minute setup.Installation Requirements: Needs 32 to 52 inches of clearance height behind the tub for bottom access; not suitable for sunken or in-ground spas; customer service available for assistance.