The FilterQueen Defender Enviropure Charcoal Filter Wrap includes:

(1) Enviropure Charcoal Filter Wrap:

The Enviropure Charcoal Filter Wrap is made with HEGA (High Efficiency Gas Absorption) material, which is highly effective at reducing pollutants such as tobacco smoke, pet odors and lingering cooking odors.

How often to change your filters:

Enviropure Charcoal Filter Wrap:

Change every 3-6 months. For best results, change every 3 months for homes with pets or smokers.