Available to Order September 1st

4-1/2” Platform
4SPACE Solid Walls

The 4-1/2” Solid Walls Platform is a non-progressive site built system composed of frame and tile components. It combines the precision of factory-cut and pre-assembled elements with the flexibility required for modern interiors. This platform offers a wide range of aesthetic options that mimic the look and feel of custom interior construction while delivering outstanding acoustic performance. At the same time, it is designed to install as quickly as a unitized wall system, providing both installation efficiency and long-term adaptability.

System Overview

Explore the 4-1/2” Solid Walls Platform kit of parts through the sections below, including system fundamentals, doors, hardware, transition details, electrical and technology, materials and finishes, and features and performance.

System Fundamentals

The 4SPACE 4-1/2” Solid Walls platform combines fast framing with modular tiles to enable design freedom, service integration, and efficient installation. Installation progresses through a sequence of framing, utility integration, inspection, and finish application, providing flexibility throughout the construction process.

Doors

Complete your space with swing or sliding doors, offering additional versatility and customization for any application or aesthetic.

Doors are part of the broader 4SPACE product family. Swing doors can be installed in a solid wall application. Sliding doors currently require attachment to the 4SPACE 1-1/8" Glass Wall Platform, solid wall attachment applications are in development.

Hardware

Door hardware brings the final layer of function, finish, and user experience to the wall system. Explore locksets, pulls, and hardware options for security, privacy, accessibility, and design intent in each space.

Doors and hardware are part of the broader 4SPACE product family but currently require attachment to the 4SPACE 1-1/8" Glass Wall Platform. Solid wall door applications are in development.

Transition Details

A comprehensive set of transition options supports seamless connections across glazing, drywall, and solid wall systems to enable flexibility and consistency as spaces evolve.

Electrical & Technology

The 4-1/2” Solid Walls Platform supports the technology needs of the space with flexible electrical and AV integration. The system can accommodate conventional electrical and pre-wired power distribution solutions, helping teams align power and connectivity with on-site conditions.

Materials & Finishes

Select among a full architectural range of finish options for visual continuity or project-specific levels of expression.

A styled flat-lay of home decor and material samples on a light beige surface, including woven textiles, a glass dish, dried feathers, a shell, a small coral piece, a brush, and tile samples.

Features & Performance

The 4-1/2" Solid Walls Platform is engineered for performance—delivering dependable privacy, durability, and finish consistency. Designed for demanding interiors, it balances everyday performance with clean, disciplined architectural expression.

Acoustics

STC ratings are determined by testing a representative according to ASTM E90 and classified according to ASTM E413 by an accredited independent testing agency

  • Laminate, HPL Tile - 48 STC
  • Wallcovering Tile - Coming Soon
  • Steel Tile - 48 STC
  • Acoustic Tile - 47 STC with .65 NRC
See STC rating for Wall Systems

Structural & Building Code

  • Load Bearing Capacity (ANSI / BIFMA X5.6)
  • Transverse-Load Capacity (ASTM E72)
  • Glass Thickness (ASTM E1300)
  • Glazing Materials (ANSI Z97.1, CPSC 16 CFR Part 1201, Category II, and CAN/CGSB-12.1 ) and markings
  • Seismic Loads (per zone requirements)
  • Surface Burning (ASTM E84 and CAN/ULC-S102)
  • Materials comply with requirements for installation in non-combustible building types in accordance with IBC 2024 and NBCC 2025

Sustainability

  • GREENGUARD - Coming Soon
  • BIFMA Level - Coming Soon
  • Living Building Challenge Declare® - Coming Soon
  • Indoor Air Quality - Coming Soon
    • GREENGUARD certified to be low-emitting
    • In compliance with ANSI/BIFMA Standard Method M7.1-2011
  • Part of the Haworth Take Back Program
See Sustainability Report

Compatible Products

The 4-1/2” Solid Walls Platform works seamlessly with the 4-1/2” Glass Wall Platform, giving project teams greater freedom to create a more complete architectural system for enclosed focus, visual connection, and long-term adaptability across the floorplate.