Front view of the WhisperRoom MDL 4230 S, a 3.5' × 2.5' single-wall soundproof booth with the door open, showing interior acoustic foam, LED lighting, and modular construction.
Front view of the WhisperRoom MDL 4230 S, a 3.5' x 2.5' single-wall soundproof booth featuring a solid door with a window, durable exterior panels, and compact acoustic design.
Side view of the WhisperRoom MDL 4230 S, a 3.5' × 2.5' single-wall soundproof booth shown with the door open to display the interior layout and modular panel construction.
Rear exterior of the WhisperRoom MDL 4230 S single-wall soundproof booth, showing the integrated ventilation system and modular panel construction.
Top-down diagram of the WhisperRoom MDL 4230 S single-wall soundproof booth with labeled interior dimensions of 40" × 28"

MDL 4230 S

$5,545.00
$5,545.00
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DETAILS

The MDL 4230 S is a compact single-wall WhisperRoom® booth engineered to deliver reliable noise reduction in one of our smallest and most space-efficient footprints. Its modular construction, durable materials, and consistent acoustic performance make it suitable for locations where controlled sound is important but available space is limited, including residential, commercial, educational, and production environments.

WhisperRoom booths have been used in thousands of professional, residential, and institutional settings for more than three decades, offering long-term reliability and consistent acoustic performance across a wide range of applications.

This model is ideal for users who need moderate isolation in a highly compact enclosure. It provides an efficient balance of portability, acoustic control, and ease of placement, with the flexibility to adapt or upgrade as needs evolve over time.

Key Features

  • Single-wall isolation for environments where moderate sound control is appropriate

  • Ultra-compact 2.5 ft by 3.5 ft layout that fits comfortably into tight spaces and small rooms

  • Modular panel system allowing flexible placement of the doors and ventilation components

  • Fully upgradeable to an Enhanced (double-wall) configuration for increased isolation performance

  • Compatible with a wide range of Options and Accessories for specialized uses

  • Non-permanent construction that can be disassembled, relocated, or reconfigured as needed

  • Straightforward assembly with individually boxed components and a clear, modular process

  • Integrated ventilation system to maintain airflow during extended use

  • Two cable passages for clean and flexible equipment routing

  • Includes two 2 ft by 4 ft acoustic foam sheets for initial interior treatment

Specifications

Feature Detail
Exterior Dimensions 3'8" × 2'8" × 6'11"
Interior Dimensions 3'4" × 2'4" × 6'8"
Weight 485 lbs
Door Window 12" × 30"
Ventilation Systems 1
Cable Passages 2
Included Acoustic Treatment (2) 2' × 4' sheets
Floor Space 8.75 sq ft
Ventilation Clearance Ventilation adds approximately 5.5"

Shipping and Assembly

All components are shipped individually boxed for easier handling and placement. Most orders are processed and ready to ship within 48 hours. Freight charges are calculated during checkout. The booth assembles with standard tools and is designed to be set up in a short period of time.

Important Notes

Some photos show optional accessories such as interior lighting or additional window configurations. These items are not included in the base model.
Manufactured in the USA.