You can purchase bamboo charcoal wall panels from various sources, including:

1. **Home Improvement Stores**: Major retailers like Home Depot, Lowe’s, or Menards may carry bamboo charcoal panels or special order them.

2. **Specialty Flooring and Paneling Stores**: Stores that specialize in flooring, wall coverings, or eco-friendly materials often stock bamboo charcoal panels.

3. **Online Retailers**: Websites like Amazon, Wayfair, and eBay have a variety of bamboo charcoal wall panels available for purchase.

4. **Eco-Friendly Product Stores**: Retailers that focus on sustainable products may offer bamboo charcoal panels, both online and in physical locations.

5. **Manufacturer Websites**: Many manufacturers sell directly to consumers through their websites. Look for companies that specialize in bamboo products.

6. **Local Craft or Lumber Stores**: Some local suppliers may offer bamboo products, including wall panels.

When purchasing, check reviews, compare prices, and consider shipping costs if ordering online. It’s also a good idea to confirm the panel specifications and any eco-certifications if you’re focused on sustainability.