About this item Easy to install and ready to use. Quick drain Adjustable size. Automatically opens when emptying and automatically closes when emptying. Function: anti-odor, deodorization, anti-failure Product Description Features: Easy to install, plug and play. Quickly drain. Adjustable size. Opens automatically when empty and close automatically after being emptied. Function: anti-odor, deodorization, anti-defective. working principle When the groundwater flows, the gravity of the water will open the bottom of the ABS seal, and the flowing water will not be hindered. After water disturbance, the seal ASB closes automatically by gravity. Completely sealed so that gas, pests and spills in the pipe cannot be installed. Features: Material: ABS + metal. Dimensions: 48 x 33.5 x 45mm. Application: Suitable for 3.6-4.7mm holes. White Package Contents packaging : 1 x Filter Trap. Note: 1. Due to the different light and display settings, the item's color may be slightly different from the picture. 2. Due to manual measurement, the size shown may vary by 0.5-2cm.