Prevents odor backflow to improve indoor air quality using innovative drain core technology, helping keep living spaces pleasant. Suitable for kitchens, bathrooms, and laundry rooms; designed to handle drainage needs in any area requiring efficient water management. Made from ABS and silicone; adjustable extension pipe fits a range of pipe diameters and is built for longterm performance, making it a practical addition to bathroom renovations. Ideal for homeowners, hotel managers, and construction professionals; meets the needs of a wide range of users seeking reliable drainage solutions. Use scenarios: Kitchen: install to minimize sewer odors and maintain a clean, fresh kitchen environment. Bathroom renovation: adapt to different pipe sizes during vanity drain installations for a snug, leak fit. Laundry room: extend and connect to utility sinks or drains with varying diameters to ensure proper drainage and odor control.