FlexFit® Adjustable Base Assembly and Disassembly Guide

Applies to: FlexFit® 1, 2, and 3; Magnet and Strap attach, sold after 2017

This guide explains how to assemble, set up, move, disassemble, and reassemble a Sleep Number® FlexFit® Adjustable Base safely and correctly. Follow these instructions whether you are installing a new base, relocating within your home, or preparing it for a move.

Important: Your base or control system may vary slightly by model.

What is a FlexFit® Adjustable Base?

A FlexFit® Adjustable Base is a smart, motorized bed base designed to work with the Sleep Number® app, allowing personalized comfort and positioning.

FlexFit® Model Overview

• FlexFit® 1: Head adjustability
• FlexFit® 2: Head and foot adjustability, Partner Snore™, under‑bed lighting
• FlexFit® 3: All FlexFit® 2 features plus foot warming technology

Safety Warning

Some Sleep Number® Smart Mattresses with FlexFit® bases use strong magnets. When the mattress or magnetic components are detached, the magnets may emit a strong magnetic field. Follow all safety instructions when disconnecting or moving components.

Before You Start: Important Setup Information

Time and Help Required

• Each process typically takes approximately 60 minutes
• Two people are recommended for setup and positioning

Tools Required

• None (standard assembly requires no tools)

What This Guide Covers

• Doorstep Delivery: Assembling a FlexFit adjustable base
• Disassembling the FlexFit adjustable base for moving
• Reassembling the FlexFit adjustable base after a move
• Compatible Mattresses
• Frequently asked questions

Doorstep Delivery: Assembling your FlexFit Adjustable Base

Step 1: Unbox the Adjustable Base

1. Stand the base upright on the side rail edges.
2. Flex the head panels slightly for stability.
3. Cut and remove the orange zip ties.
4. Do not cut or damage black wire bundles.
5. If included, remove head and foot rails and set them aside (they may be wedged between the decking panel and frame).

Step 2: Install and adjust the legs

• With one person stabilizing the base, insert each leg into the frame receiver.
• Press the metal button, slide the leg to your preferred height, and twist to lock.
• Do not remove the clear spacer tape—it ensures a snug fit.
• Remove rubber caps if placing the base on carpet.
• Lean the base onto its legs and confirm all legs are set to the same height.

Tip: Lower leg heights may reduce stability—have a partner support the base while checking.

Step 3: Secure and Inspect Under-Base Connections

1. While the base is on its side, inspect all under‑base connections.
2. Route mattress hoses and cables through the designated openings on each side.
3. Connection layouts may vary depending on your control system type.

Step 4: Position the base

1. Lower the base into its final location.
2. Use the built‑in handle openings to adjust placement.
3. Ensure mattress connection points at each hip remain accessible.

Step 5: Install head and foot rails (if included)

Skip this step if your base did not come with rails.

1. Remove protective plastic from siderails.
2. Slide the head and foot rails into the grooves at each end.
3. Secure rails using speed screws:
   • 4 screws at the head
   • 2 screws at the foot

Step 6: Route and secure hoses

1. Route hoses along the base frame.
2. Secure them using the built‑in clips.
3. Align the white hose sticker with the side‑rail clips to avoid excess slack.

Step 7: Connect power

1. Plug the power cord into a grounded electrical outlet.
2. Ensure the outlet is not controlled by a wall switch.

Step 8: Install base frame links

Skip this step if you do not have a King base

1. Install frame links at both the head and foot of the bed.
2. Hold deck panels up and align the links with frame openings.
3. Snap securely into place.

Step 9: Install the control system

Important: Steps will vary depending on the type of pump you have.

Smart Control System

• Attach the bracket at the sleeper‑left foot of the base.
• Route the wire harness along the metal frame.
• Secure with Velcro straps.

Firmness Control System

• Place the system on the shelf at the sleeper‑left foot of the base.

Step 10: Complete wire and hose connections

Smart Control System Connections

1. Sleeper right hose (blue)
2. Sleeper left hose (white)
3. Left‑side wire harness (blue)
4. Right‑side wire harness (white)
5. Power cord (with small green wire)

Firmness Control System Connections

1. Sleeper right hose (blue)
2. Sleeper left hose (white)
3. Wire harness (black)
4. Power cord

After connecting, confirm indicator lights are illuminated.
If no lights appear: Check the outlet or wall switch.

Step 11: Prepare the base for the mattress

• Lay decking panels flat.
• Confirm hose access points at each hip.
• All FlexFit® models include a hose.
• FlexFit® 3 models also include a foot‑warming wire.

Moving Your FlexFit Adjustable Base: How to Disassemble

Follow these steps when relocating or storing your adjustable base.

Watch the video for easy step-by-step help or check out the written instructions below to get started.

Step 1: Prepare the Mattress

1. Inflate both sides of the mattress to 100.
2. Disconnect hoses and attach white closure caps.
3. Disconnect foot‑warming wires (if applicable).
4. Detach the mattress:
   • Magnet system: Follow safety guidance before disconnecting.
   • Strap system: Unclip gray straps at hips and foot.
   • Split King models include additional foot straps.
5. Bag the mattress for transport.
6. Disconnect and box the control system.

Step 2: Disassemble the Base

1. Separate bases (King, Cal King, FlexTop™, Split King).
2. Disconnect right‑side and left‑side cables.
3. Remove frame links at head and foot.
4. Detach hoses from the foot rail.
5. Remove head and foot rails (if installed).
6. Remove legs for easier doorway clearance.

Moving Your FlexFit Adjustable Base: How to Reassemble

Watch the video for easy step-by-step help or check out the written instructions below to get started.

1. Install legs and confirm equal height.
2. Reattach head and foot rails (if applicable).
3. Tighten all screws.
4. Reinstall frame links at head and foot.
5. Reconnect right‑ and left‑side cables (if applicable).
6. Secure all connections to the control system.
7. Plug in the power cord.

Compatible Mattress Instructions

This FlexFit® adjustable base is designed to work with compatible mattresses, including:

• Smart Bed Collection
• 360 Collection
• ComfortNext™ Collection

Always follow mattress-specific instructions in addition to this guide for best results.

Frequently Asked Questions

How long does it take to assemble a FlexFit Adjustable Base?
Assembly typically takes about 60 minutes with two people.

Do I need tools to assemble a FlexFit base?
No tools are required for standard assembly.

Why isn’t my Control System turning on?
Check that the power cord is fully connected and that the outlet is not controlled by a wall switch