Zinus ESBS-4Q

Zinus Upholstered Metal and Wood Box Spring, 4 Inch, Queen - Instruction Manual

Model: ESBS-4Q

Product Overview

The Zinus Upholstered Metal and Wood Box Spring provides a sturdy foundation for your mattress with an aesthetic design. It features a steel and plywood framework encased in a woven grey fabric, designed to support various mattress types including latex, memory foam, or spring mattresses. This 4-inch Queen size model is engineered for durability and ease of assembly.

Assembled Zinus Upholstered Metal and Wood Box Spring, Queen size, 4 inch height, with grey fabric cover.

Figure 1: Fully assembled Zinus Upholstered Metal and Wood Box Spring.

Product Overview Video

Video 1: Official Zinus overview of the Upholstered Metal Box Spring with Wood Slats.

Safety Information

Important: Do not load more than 700 pounds onto the box spring. Always follow the assembly instructions carefully to prevent instability or collapse. Ensure all connections are secure before placing a mattress on the foundation.

Package Contents

Your Zinus Upholstered Metal and Wood Box Spring package includes all necessary parts, tools, and instructions for assembly. Please verify all components are present before beginning assembly.

  • Steel and Plywood Frame components
  • Woven Fabric Cover
  • Wooden Slats
  • Assembly Hardware (screws, bolts)
  • Assembly Tools (Allen wrench, ratchet)
  • Instruction Manual

Setup and Assembly

Assembly of the Zinus Upholstered Metal and Wood Box Spring is designed to be straightforward and typically takes less than an hour. Follow these general steps:

  1. Unpack Components: Carefully remove all parts from the packaging. Lay them out to ensure all pieces are accounted for.
  2. Assemble Frame Sides: Connect one long frame piece with one short frame piece to form an "L" shape. Repeat this for the other long and short pieces.
  3. Join Frame Halves: Connect the two "L" shaped frame halves to form the complete rectangular frame. Finger-tighten all screws initially.
  4. Secure Connections: Once the full frame is assembled, use the provided ratchet to tighten all screws. Begin by tightening diagonally opposite screws to ensure even tension.
  5. Install Wooden Slats: Unroll the wooden slats over the assembled frame. Ensure the slats fit securely into the frame and make firm contact with any Velcro strips, lying level with the top of the frame.
The metal frame of the Zinus box spring before slats are installed, showing the central support bar.

Figure 2: Box spring frame prior to slat installation.

Wooden slats being unrolled and placed onto the Zinus box spring frame.

Figure 3: Installation of wooden slats onto the frame.

Assembly Video Guide

Video 2: Official Zinus assembly guide for the Upholstered Metal Box Spring with Wood Slats.

Operating Instructions

The Zinus Upholstered Metal and Wood Box Spring is designed to provide a stable and supportive base for your mattress. Once assembled, place your mattress directly on top of the wooden slats. This foundation is compatible with various mattress types, including latex, memory foam, and traditional spring mattresses.

Ensure the box spring is placed on a compatible bed frame or platform bed (sold separately) for proper support and stability. The 4-inch profile offers a lower bed height option.

Zinus box spring with a mattress placed on top, shown within a bedroom setting.

Figure 4: Zinus box spring with a mattress, ready for use.

Maintenance

To maintain the appearance and longevity of your Zinus Upholstered Metal and Wood Box Spring, wipe the fabric cover with a dry cloth as needed. Avoid using harsh chemicals or abrasive cleaners, which may damage the fabric or frame finish. Periodically check all screws and connections to ensure they remain tight and secure.

Troubleshooting

  • Squeaking Noises: If you experience squeaking, re-tighten all assembly screws. Ensure the box spring is placed on a stable, level bed frame.
  • Mattress Sliding: If your mattress slides on the box spring, consider placing an anti-slip mat (not included) between the mattress and the box spring slats.
  • Sagging: Ensure the box spring is correctly assembled and all components are securely fastened. Verify that the total weight on the box spring does not exceed the maximum recommended capacity of 700 lbs (for Queen size). If sagging persists, inspect the bed frame supporting the box spring for any issues.

Specifications

Brand Zinus
Model Number ESBS-4Q
Size Queen
Style 4 Inch
Product Dimensions (L x W x H) 79"L x 59.5"W x 4"H
Material Fabric, Plywood, Steel
Item Weight 45 Pounds
Maximum Weight Recommendation 700 Pounds
Assembly Required Yes
Product Care Instructions Wipe with Dry Cloth
Diagram showing the dimensions of the Zinus Queen 4-inch box spring: 79 inches long, 59.5 inches wide, 4 inches high, with a 700 lbs capacity.

Figure 5: Product dimensions and weight capacity.

Image showing available profile heights for Zinus box springs: 4 inches, 7.5 inches, and 9 inches.

Figure 6: Available profile heights for Zinus box springs.

Warranty Information

The Zinus Upholstered Metal and Wood Box Spring includes a worry-free 5-year warranty. For specific details regarding coverage and claims, please refer to the warranty documentation included with your product or contact Zinus customer support.

Customer Support

For further assistance, missing parts, or warranty claims, please contact Zinus customer support. You can find contact information on the Zinus official website or through the retailer where the product was purchased.

Visit the official Zinus Store for more products and information: Zinus Store

© 2026 Zinus, Inc. All rights reserved.

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