How to Assemble a Sleep Number® Modular Base

Your modular base can be placed inside a bed frame or combined with Sleep Number® legs and brackets.

Quick Answer

To assemble your Sleep Number® Modular Base:

1. Connect the side rails.
2. Attach legs and brackets (if purchased).
3. Insert the support and end beams.
4. Slide the deck panels into place.
5. Cover the base with the included coverlet.

The Modular Base can be used inside most bed frames or paired with Sleep Number® legs and brackets.

Before You Begin

What you'll need

• Sleep Number® Modular Base components
• Optional legs and brackets (if purchased)
• A flat, open area for assembly

Assembly Tips

• Assemble all components before placing your mattress on the base.
• Make sure all pieces are fully seated and aligned before moving to the next step.
• Do not force parts together. Components are designed to fit snugly.

Step 1: Connect the Side Rails

1. Connect the short and long side rails.
2. Push the rails together firmly until fully seated.
3. Insert the locking pins by sliding them into the side rails.
4. Confirm the top of each pin is flush with the top of the rail.

Step 2: Attach Modular Base Legs and Brackets (Optional)

If you purchased Sleep Number® legs or headboard/footboard brackets, install them now.

To attach legs and brackets

1. Locate the mounting holes in the side rail.
2. Insert the bolt through:
   • Bracket
   • Side rail
   • Leg
3. Place the washer on the bolt with the cupped side facing the leg.
4. Thread the wing nut onto the bolt and hand-tighten.
5. Repeat for all remaining legs and brackets.

Queen Modular Base Only

If you have a Queen-size Modular Base, install the additional support legs on support beams 1, 2, and 3.

Step 3: Install the Support and End Beams

1. Locate the support and end beams.
2. Match the "A" end of the beam with the "A" groove on the side rail.
3. Match the "B" end of the beam with the "B" groove on the opposite side rail.
4. Lower the beam into place.

Be sure each beam is fully seated before continuing.

Step 4: Install the Deck Panels

The deck panels create the sleeping surface of the base.

1. Start from the outside edge of the frame.
2. Slide each deck panel onto the frame.
3. Lock each panel onto the frame tabs and support beams.
4. Continue until all panels are installed.

Verify Proper Installation

• Panels should sit flush on all sides.
• Panels should feel secure and level.
• Do not force deck panels into position.

Step 5: Install the Coverlet

Once assembly is complete:

1. Place the coverlet over the assembled base.
2. Smooth it evenly across the surface.

Your Modular Base is now ready for mattress installation.

When to Contact Support

If you continue to have trouble assembling your Modular Base, contact Sleep Number Customer Support.

Common Questions