Filters
- MDF: Pressed wood with resinous adhesive material. Resistant to impacts. Sensitive to humidity.
- Chipboard: Pressed recycled wood with resinous bonding material. Less dense than MDF and with lower resistance to moisture. Economical material. It is also known as Novopan.
- Plywood: Artificial wood made of thin layers of wood bonded with strong adhesive material. It has high resistance to moisture and long lifespan.