These brackets fit the N50 and the earliest N150 bases Malouf used two bracket designs across the N150's run, and they are not interchangeable. This set fits the N50 and the earliest N150 bases. Newer N150 bases take a different bracket — see the E255 / E455 / M455 / M555 / S655 / N150 bracket set. On the N150, the remote won't tell you which one you have. Per Malouf, the only reliable way to identify it is the motor itself or the original packaging. If you still have the box, the model information is printed on it. Don't have the box? Call us at 866-892-1954 with your base nearby and we'll walk you through checking the motor, so you order the right set the first time. Own an E-, M- or S-series Structures base instead? Those use a different bracket — see the E255 / E455 / M455 / M555 / S655 set, the S755 set, or the Universal set for current bases. The Malouf RP-STABN150HBBRACKETS Headboard Brackets are designed to fit the following models: Structures N50 Structures N150 (earliest models) If you own a split King or Cal king you just need one set. The box contains 2 brackets. These are made by Malouf® specifically for the Structures adjustable base.