Super Heavy Duty Center Support Bars

$299.00

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🛏 STL Beds Super Heavy-Duty Center Support System

The ultimate in bed support—engineered for strength, stability, and long-term durability.

Our Super Heavy-Duty Center Support System attaches directly to your existing bed frame with headboard, footboard, and side rails. It features
four industrial-grade 1½″ angle iron crossbars that run widthwise—one at the head, one at the foot, and two evenly spaced in betweenplus two longitudinal (head-to-toe) braces that lock everything solidly into position. This unique design—found nowhere else—delivers unmatched central support across the entire bed.

✅ Best-in-Class Support For:

  • Heavier individuals or anyone seeking maximum mattress set support
  • Memory foam, gel foam, and hybrid mattresses
  • Natural latex rubber mattresses
  • Traditional mattress + box spring combinations
  • Soft-sided waterbeds

This is STL Beds’ strongest and most reliable center support system—built for peace of mind, built to last.

Price Includes:

Description

Super Heavy-Duty Center Support Bar System

The STL Beds Super Heavy-Duty Center Support Bars are engineered for customers who demand the absolute best in strength, stability, and mattress protection. This is our most robust system—designed to integrate directly into your existing bed frame with headboard, footboard, and wooden side rails.

🛏️Superior Construction & Performance

This system includes four 1½″ industrial-grade angle iron crossbars that span the width of your bed:

  • One bar positioned near the headboard
  • One near the footboard
  • Two additional bars evenly spaced between them

Each of the four crossbars includes three solid steel legs, and each leg features a threaded, adjustable foot—giving you a total of 12 legs and 12 feet. These evenly distributed supports transfer the weight directly to the floor, easing the load on your existing wood frame components.

We’ve gone a step further by adding two longitudinal braces (head-to-toe tie rods) that lock the entire structure together. This feature is exclusive to STL Beds and provides extra rigidity and stability not found in competing designs. It also helps prevent legs from shifting out of position—an issue common in lesser systems.

💪 Built for Demanding Applications💪

This system isn’t for the average sleeper—it’s designed for:

  • Heavier individuals or plus-size couples
  • Softside waterbeds
  • Memory foam, gel foam, and hybrid mattresses
  • Natural latex rubber mattresses
  • Traditional mattress + box spring sets

With proper installation, our system can support over 2,000 pounds without compromise.

Fit Criteria: Will It Work With My Bed?

  • Compatible Sizes: Queen, King, and California King
  • Compatible Bed Types: Wooden headboard/footboard with side rails
  • Wooden Lip/Ledge: Must be present inside the side rails (this is what supports the system)

📏Measure from floor to top of lip:

  • Option 1: 8¼″ to 15¾″
  • Option 2: 4 3/4″ to 8½″

Have metal side rails? We now offer an optional fitment solution—please contact us directly for assistance.

 

Each STL system is pre-packaged for 3-in-1 compatibility across Queen, King, and Cal King sizes.

⚙️ Key Features & Specs

  • Super-Duty Support: 4 cross arms, 12 legs, 12 adjustable feet
  • Materials: High-carbon USA railroad steel
  • Crossbars: 1.5″ x 1.5″ x 0.100″ (10-gauge)
  • Exclusive Tie Rod System: Prevents leg shifting & enhances stability
  • Load Tested: Supports over 2,000 lbs. with proper installation
  • Adjustable Height: See the two options above for height ranges.

🧱 Additional Details

  • Color: Black
  • Unmatched Strength: Built to exceed the daily demands of heavier sleepers
  • Made in the USA
  • Lifetime Warranty on all steel components

🏆 The STL Beds Commitment

At STL Beds, we don’t just sell frames—we build sleep solutions. This product reflects decades of experience, craftsmanship, and problem-solving. It’s the most reliable, most rugged bed support system on the market—because your mattress is only as good as the support underneath it.

💰 Looking for a More Budget-Friendly Option?

For those looking for a more economical alternative, consider the GS3 XS Center Support. It’s a reliable full-to-queen solution without the added cost of extra support features.

Additional information

Weight 38 lbs
Dimensions 63 × 9 × 4 in
Size

, ,

Lip Height

4 3/4 to 8 1/2 Inches, 8 1/4 to 15 3/4 Inches

Brands

Product Features

Product Features: About Our Super Heavy-Duty Center Support Bars

 

Assembly & Structural Design

  • Assembly required
  • Designed to replace weak wood slats or cheap steel slats.
  • Transfers weight safely to the floor through 12 legs, reducing strain on your bed’s wooden side rails, headboard, and footboard.
  • Includes four 1½″ industrial-grade angle iron crossbars:
    • One near the headboard
    • One near the footboard
    • Two evenly spaced in the center
  • Each crossbar includes 3 solid steel legs with adjustable threaded feet—for a total of 12 support points.

💪 Unmatched Strength & Durability

  • High-carbon steel construction built from recycled U.S. railroad steel.
  • Designed for heavy-duty use—ideal for softside waterbeds, plus-size sleepers, and people who simply demand great quality.
  • Flange nuts on each leg add extra holding power for plastic inserts—rare among competitors.

🔒 Exclusive Stability Features

  • Two head-to-toe tie rods lock all crossbars into one unified structure.
  • Prevents shifting, sagging, or leg misalignment—especially on slick floors or with movement.
  • Helps distribute weight more evenly across all 12 feet.
  • Includes all necessary nuts, bolts, washers, and wood screws to fasten bars to the side rail lip.

🧱 Built to Handle More

Ideal For:

  • Heavier individuals or plus-size couples
  • Softside waterbeds
  • Memory foam, gel foam, and hybrid mattresses
  • Natural latex rubber mattresses
  • Traditional mattress + box spring sets

✅ With proper installation, supports over 2,000 lbs.

Fit & Sizing Guide

✅ Compatible Bed Sizes:

  • Queen
  • King / Eastern King
  • California King

Each size includes:

  • 4 Crossbars
  • 12 Adjustable Legs
  • Universal fit (1 SKU per group)

Side Rail Lip Requirement:

Your bed must have a wooden lip or ledge inside each side rail to support the crossbars.

📏 Height Options (Measure from floor to top of lip):

  • Option 1: 8¼″ to 15¾″
  • Option 2: 4 3/4″ to 8½″

 

🏡 Clean & Safe Appearance

  • Black-Low-VOC finish exceeds EPA safety standards.
  • Manufactured using 99% recycled rail steel.

🌟 Bonus Performance Features

  • 📏 Superior steel thickness: 10-gauge (0.100″) vs. competitor’s 0.094″

📦 Shipping & Support

  • Double-boxed for protection during transit
  • Instructions included
  • 📞 Phone support available—real people, real help

⚠️ Important Notes

  • ❌ Do not slide bed once legs are installed
  • ✅ Must be used with a box spring or foundation (not for use with mattress alone)
  • 🛑 On slick floors (laminate, hardwood, etc.), use non-slip pads under feet—consider our SlipStick Grippers

 

 

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