Abstract: A mattress frame that is lightweight, durable, and minimizes material use. The apparatus includes a pair of side rails connected to a pair of end rails via four end caps to form a generally rectangular shape. The side rails and the end rails can vary in length and each of the side rails and end rails has an identical cross-section shape made up of five sections surrounding a slot. The end caps each include two tabs for insertion into the slots of the side rails and end rails. The side rails and end rails further include a pair of strengthening steel ribs. An alternate embodiment includes slats which extend from side rail to side rail or from end rail to end rail. Each slat has a generally U-shaped cross section and further includes two galvanized steel ribs running their entire length. Another alternate embodiment includes feet.

Abstract: A lightweight and durable mattress foundation. The apparatus includes a first tier of side rails connected to a first tier of end rails via four end caps and a second tier of side rails connected to a second tier of end rails where the first tier is connected to the second tier via a plurality of standoffs. The side rails and the end rails can vary in length and include strengthening ribs. The first tier side and end rails have a unique cross-section made up of five sections surrounding a slot. The second tier side and end rails have a different unique cross-section. The end caps each include tabs for insertion into the slots of the side and end rails. Slats having a U-shaped cross-section and including strengthening ribs extend from side rail to side rail and/or from end rail to end rail. An alternate embodiment includes feet.