Lambro 4"x3" or 3"x4" Plastic Vent Adapter, a dryer vent accessory crafted from plastic in a black finish. This adapter features a female (large end) and male (small end) connection type, ensuring compatibility with various dryer vent systems. With an overall height of 2.4 inches and a diameter of 4x3 inches, it seamlessly increases from 3 to 4 inches or reduces from 4 to 3 inches, offering versatility in dryer vent configurations.