MD Comfort Series hydraulic levelers (MD-CH) are controlled via remote-mounted, single-pushbutton NEMA 4 station. They use 2 cylinders to operate deck/lip and come in 72 and 78 in. widths. With spring-balanced lifting system operated via comfort-grip handle that also functions as maintenance stand, mechanical levelers (MD-CM) come in 66, 72, and 78 in. widths. Both types have 30,000 lb max operating capacity and working ranges of 5 in. above to 5 in. below dock level.