OPTIONAL SIZE TYPE: Great length: 58mm*38mm*105mm/2.2*1.4*4.1inch; Medium long: INSTALLATION METHOD: Double port leak core has large displacement, no blockage, water permeable seal, good deodorizing function, easy to install and clean. Open the floor drain cover, place the floor drain core, install the strainer, and then cover the floor drain cover. PERFECT DRAINAGE EFFICIENCY: External drainage outlet improves drainage efficiency. The variable diameter apron of the sealing ring is more tight, and the sealing is not easy to leak. GOOD SEALING PERFORMANCE: The U-type water storage level has a perfect sealing function, maintains a good deodorization condition, and effectively prevents mosquitoes from climbing into the pipes. The variable diameter apron of the sealing ring is tighter, and the seal is not easy to leak. STAINLESS STEEL MATERIAL: The shower drain is made of high quality stainless steel. The thickened solid steel plate is durable, not easy to damage. The stainless steel core is not easy to corrode.