Simply remove the cushions and measure the base underneath. As long as the width is between 21 and 28 inches and the length is between 48 and 82 inches, one of our boards will work just fine. If you need further assistance, please feel free to reach out to us.

Yes, the boards are adjustable in length. They come with various individual panels, allowing you to fold up or cut off a panel to adjust the length. The width, however, is not adjustable.

Sofas typically sag over time due to worn-out springs. Our support boards help distribute weight across a larger area of springs, firming up the sofa and alleviating sagging. This also helps prolong the sofa's life by reducing stress on the springs.

Generally, no. The product is designed to support one sleeper. For beds intended for multiple sleepers (e.g., queen and king), you will need two units to cover the width. Please refer to the "Size Guide" image and product description to ensure you select the correct size, or reach out to us for assistance.

The product is not meant to cover the entire mattress area, but only the region around the sagging spot. Because it does not cover the entire length, it can be adjusted upwards or downwards to precisely position the center under the sagging area.

Yes, this product works with all mattress types. It supports the sagging area from underneath the mattress, regardless of whether you use a mattress topper or the exact type of mattress.

All our boards are 48 inches long. They are designed to cover the upper 48 inches where weight is concentrated and where horizontal metal bars are located. The width varies: 36 inches for Twin, 48 inches for Full, and 60 inches for Queen.

No, unfortunately. Sofa beds are not standardized, so we cannot design the product to remain installed on the sofa bed mechanism permanently. The board must be folded up when the sofa bed is collapsed and reinstalled when extended.

No, the sofa bed is for illustrative purposes only and is not included in this purchase.