General description New and high quality main brush side HEPA filter for 600 Series 630 650. Made of high-strength and environmentally friendly material, this filter screen helps maintain the cleaning performance of the sweeper while reducing the penetration of dust, pollen, and other allergens into the air you breathe. Technical specifications Material: Plastic Color: As shown Replacement frequency: Every 1-2 months Measurement allowed error: +/- 1-3 cm Package Contents 2 x Rolling brush 3 x Side brush 3 x Filter 3 x Screw 2 x Cleaning brush