Indoor dryer vent set features three layers of filtration: water drawer filter, stainless steel filter screen, and polyester filter. These three-layer filtration functions effectively capture lint, dust, and pet hair from the air, helping maintain a clean indoor environment. No additional flexible aluminum duct is required; the included hose can extend up to 9.8 ft, accommodating various installation angles and lengths. The indoor dryer vent releases warm air into the room, which can provide supplemental heating during colder months, potentially reducing reliance on other heating systems. In cases of high indoor humidity, it is recommended to open a window or use ventilation to manage moisture levels. The unit is easy to clean and maintain. Remove lint buildup from the back of the filter, slide out the drawer for cleaning, and refill with fresh water. The stainless steel filter does not require replacement. The polyester filter pads should not be washed with water; instead, remove and vacuum them as needed. Color: As shown Material: Plastic Package Contents: 1 x Dryer vent 6 x Polyester filter pads 1 x Vent hose Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.