How to Assemble a Memory Foam Mattress in a Box: Step-by-Step

Quick Answer

To assemble a memory foam mattress in a box, clear the room, carefully open the box on the bed frame, unroll the mattress, remove the plastic wrap, and let it expand for 24-48 hours. Avoid cutting the mattress or using it before it fully expands.

Step-by-Step Assembly Guide

1. Step 1: Prepare the Room and Bed Frame: Clear the area around your bed frame. Make sure the bed frame or foundation is clean, level, and sturdy enough to support a memory foam mattress. If you have a slatted base, slats should be no more than 3 inches apart. A weak or uneven foundation can cause sagging and void the warranty.
2. Step 2: Open the Box Carefully: Place the box on the floor next to your bed frame. Use scissors or a box cutter with a short blade to cut the tape and open the top of the box. Do not cut into the sides of the box where the rolled mattress is located. Avoid using long blades or cutting deep into the box to prevent nicking the mattress.
3. Step 3: Remove the Mattress from the Box: With a helper, lift the rolled mattress out of the box and place it on your bed frame. Position it so the roll is centered on the frame. Do not unroll it yet. Always use two people for this step to avoid dropping or twisting the mattress.
4. Step 4: Cut the Plastic Wrap and Unroll: Use scissors to carefully cut the plastic wrapping lengthwise along the seam. As you cut, the mattress will begin to expand. Unroll it fully along the bed frame. Remove all plastic and dispose of it properly. Do not use a sharp knife here—scissors are safer to avoid cutting the foam.
5. Step 5: Remove the Inner Plastic Layer: Some mattresses have an additional thin plastic layer around the foam. If present, carefully cut and remove it. Let the mattress start expanding freely. Make sure every piece of plastic is removed so the foam can breathe and expand evenly.
6. Step 6: Allow the Mattress to Expand: Leave the mattress on the frame without any bedding or weight on it. It will expand and reach its full shape within 24 to 48 hours. You may notice a slight odor at first—this is normal and will dissipate. Do not sleep on the mattress until it has fully expanded, or you risk permanent indentations.
7. Step 7: Check for Full Expansion: After 24 hours, check the corners and edges. If any area still feels compressed, wait another 24 hours. Once the mattress feels firm and even, add your sheets and enjoy. If the mattress hasn't fully expanded after 48 hours, contact the manufacturer for advice.

Product Facts

• Chime 12 Inch Memory Foam Mattress in a Box: The Chime 12 Inch Memory Foam Mattress in a Box arrives compressed and rolled inside a box for easy setup. This means you can move it through narrow hallways and doorways, and set it up without needing professional help.