3-Layer Purification Filter Box – HEPA & Carbon Filter for Ventilation Systems

🌬️🔬 Clean air starts with the right filtration.

This 3-layer filter box combines a pre-filter, HEPA layer, and activated carbon filter to deliver superior air purification for ventilation and ducted systems. Available in 4", 6", and 8" sizes — filter box or spare filter set. ✅

• ✅ 3-layer filtration: pre-filter + HEPA + carbon
• ✅ Available in 4" (100mm), 6" (150mm) & 8" (200mm)
• ✅ Filter box or spare filter set options
• ✅ Compatible with standard ventilation ducts
• ✅ Removes dust, allergens & odors