Want to fine-tune your CR Box to fit your space or sound tolerance? Here are a few customization ideas:

• Bigger spaces: Use 20” x 25” filters for more surface area, increasing both filtration and airflow.
• Lower noise: Run the fan on low speed or choose a high-efficiency fan with quieter operation.
• Tighter spaces: Build a 3-filter triangle version or a vertical tower, which has a smaller footprint and works well in bedrooms or offices.
• Better looks: Use decorative tape, vinyl wrap, or a cardboard shell to blend the unit into your decor.

Some builders even attach furniture legs, caster wheels, or sound-dampening foam to customize the CR Box for comfort and mobility. The beauty of this DIY design is how adaptable it is—it can be scaled up or down based on your exact needs and health priorities.