Bertha was made to fit today’s large and heavy sewing and embroidery machines. Her airlift holds a 60 pound machine and will move your sewing machine up and down effortlessly into 3 positions: free arm, flatbed and storage. The airlift easily adjusts for different height machines as shown here. We have also included the quilt leaf for the back of the cabinet. The leaf will increase your workspace behind the unit creating approximately 5 square feet , 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..