Murphy Door ID.HINGEKIT Fmhd Pivot Hinge System W/New Ball Lock Pin Secret door, design and build your own hidden door system or cabinet door Hidden door universal hinge, inswing our out swing, left or right hinged, hidden door system Bookshelf Door System, Create your own hidden door. Design and build Instructions not included in package Patented ball bearing lower pivot point rated at 1160 torque lbs. Dynamic load and 540 lbs. Static Made in the usa