What You're Getting
A split king Contemporary IV is two Twin XL bases that sit side by side under a split king mattress set, each moving independently, with a sync cable so you can also run them together. These are the showroom display units, so they carry the normal light handling marks of a floor model and are priced well under what they sold for new.
- Adjustable Edge-to-Edge Lumbar Support
- Motorized Head Tilt
- Full Head and Foot Positioning — head incline to 65°, foot incline to 32°
- Four Preset Programmable Positions: One-Touch Flat, Anti-Snore, Zero Gravity, and Leisure
- 4 Easy Access USB Ports — USB-A and USB-C on each side
- Programmable Wireless Ergonomic Remote and Voice-Powered Mobile App
- Dual-Motor Massage
- LED Motion Activated Under-Bed Light
- Six Stackable Legs for Top Deck Heights from 4.6” to 18”
- 850 lb Lift Capacity Per Base
Rizer Kit Assembly — included with the With Rizer Head Lift Kit configuration
The Rizer kit sits between the mattress and the deck and lifts the entire head section a further 5”, so the head of the bed rises as a unit instead of folding at the shoulders. It installs on the Contemporary IV without tools beyond the included hardware.
FULL FEATURE SET
Edge-To-Edge Adjustable Lumbar Support
A separated section gives support to your lower back just where you need it
Under-Bed Light
Don't worry about stumbling around in the dark when you use the gentle illumination of our LED light
Dual USB Outlets
A built-in USB-A and USB-C port on each side of the base keeps your devices charged and ready to use for work or play
Leisure Position
Adjust the bed into a chaise lounge position to remove stress and tension from your lower back
Modular Design
Contour to your body's preferred position with five moving sections
Anti-Snore Position
Sleep better by using the anti-snore position to raise the head for a quieter night
Zero Gravity Position
Spread your weight evenly and feel almost weightless in zero gravity
Flat Position
Press one button to return to a flat, neutral position
Voice-Powered Mobile App
Customize your relaxation without putting down your mobile device, and use voice controls for easy adjustment
Dual-Zone Massage
Choose the location and intensity of your massage for enhanced R&R
Improved Lift Capacity
Heavy-duty motors lift up to 850 lb. per base so you can pile on the thick mattress and extra pillows
Fit
Rize adjustable beds are designed to fit inside most existing headboard/footboard/rail systems
Programmable Positions
Once you find a favorite position, you'll never want to go back, so save your custom settings to use any time
Zero Clearance Design
With a 4.6” profile, the platform friendly zero clearance design seamlessly fits into any bedroom
Steel Post Legs
For extra durability, Rize uses steel post legs that can support even the thickest mattress
Sync Up Two Bases
Split king includes an easy-to-use sync cable so you can operate both sides of the bed together
Platform & Leg Height Details
🔩 Base Heights
- Base: 4.5"
- Rizer Kit: Adds 5" to the head section
- Rizer + Base: Requires legs (see approved configurations below)
🧱 Leg Options & Example Configurations
| Setup | Legs Used | Total Height |
|---|---|---|
| Base Only | None | 4.6" |
| Base + 2" Leg | 2" | 6.6" |
| Base + 3" Leg | 3" | 7.6" |
| Base + 5" Leg (3" + 2") | 3" + 2" | 9.6" |
| Base + 8" Leg | 8" | 12.6" |
| Base + 10" Leg (8" + 2") | 8" + 2" | 14.6" |
| Base + 11" Leg (8" + 3") | 8" + 3" | 15.6" |
| Base + 13" Leg (8" + 3" + 2") | 8" + 3" + 2" | 17.5" |
| Rizer + Base + 5" Leg (3" + 2") | 3" + 2" | 14.25" |
| Rizer + Base + 8" Leg | 8" | 17.25" |
⚠️ Important Notes
- Legs are REQUIRED when using the Rizer Kit — the Rizer Kit cannot be installed without legs attached.
-
Only two approved leg height configurations with the Rizer Kit:
- 8" legs alone → ~17.25" total height
- 3" + 2" legs combined → ~14.25" total height
- Other leg height combinations are NOT recommended when using the Rizer Kit.
- The Rizer Kit does not come with its own legs. Use legs from the base leg set: 8", 3", and 2" (stackable).
MATERIALS & CONSTRUCTION
- Platform: OSB (oriented strand board)
- Upholstery: 100% polyester fiber
- Padding: 90% polyurethane foam pad, 10% fiber batting
- Chemicals: No formaldehyde is used in any of the base's materials
DIMENSIONS
-
Split King (2 Bases)
(4.6" to 18") high x 76” wide x 80” long
312 lbs total
Lift Capacity: 850 lbs per base
-
At a Glance
Head incline: 0–65° | Foot incline: 0–32°
Presets: Flat, Anti-Snore, Zero Gravity, Leisure
Massage: dual motor, adjustable intensity
Ports: USB-A + USB-C on each side
Condition: Floor model