The Bertha is made to fit today's large and heavy sewing and embroidery machines. Its airlift holds a 45 pound machine and will move your sewing machine up and down effortlessly into 3 positions: freearm, flatbed and storage. Also included is a quilt leaf for the back of the cabinet. The leaf will increase your workspace behind the unit, so fragile quilts won't fall on the floor as you pass them through the machine. The leaf slides along a metal rod behind the cabinet for custom positioning to the left of your machine. Curious if your large machine will fit Bertha? The opening will accommodate sewing machines no larger then 22-9/16" wide x 11-3/4" front to back (deep) x 14-1/2" tall. Bertha will fit the new Bernina 830 Viking Sapphire and Babylock Ellisimo.