Midland Lifter Assisters are engineered for versatility, durability and ease of use, and are available for use with either insulated or non-insulated manway covers, providing lifting assistance up to 88 lbs to improve ope......Midland Lifter Assisters are engineered for versatility, durability and ease of use, and are available for use with either insulated or non-insulated manway covers, providing lifting assistance up to 88 lbs to improve operator safety. Midland Lifter Assisters include powder-coated springs to prevent corrosion in harsh chemical environments, and our unique low-profile lifter design doesn’t interfere with personnel on top of the car, won’t damage loading/unloading facilities and won’t catch operator clothing. Installation is easy and various lift assists are available according to cover weights. Double spring lifter assisters.