The OEM Whirlpool 4396011RP Dryer Vent Periscope is designed for use with a vented dryer. It is a genuine Whirlpool product and measures between 18.5 inches to 30.5 inches from center to center, providing flexibility in installation. This vent periscope is specifically designed to efficiently vent hot air and moisture from your dryer to the outside, ensuring proper ventilation and helping to prevent issues related to poor airflow. It is a reliable and durable accessory that is compatible with Whirlpool dryers, offering a convenient solution for venting needs in your laundry room.