Kings Brand Furniture Twin Size Black Metal Roll Out Trundle Bed Frame for Daybed Ensure guests have a comfortable place to sleep when they come to visit with this plush trundle bed. A tubular metal frame gives the bed strength to support a weight of up to 500 pounds. Rolling casters built onto the bottom of the frame and seven metal slats allow you to easily pull the bed out from under another bed and negate the need for a box spring. Dimensions: 73"W x 39.5"D x 4"H Simple assembly required.