Usage Tips:EFFICIENT DRAINAGE: The pool center drain is easy to drain away water, dredge and clean, reliable to use, effective drainage of the water in the swimming pool. GREAT GROUND DRAIN REPLACEMENT: Filter type swimming pool floor drain replacement accessory with . Pool main drain floor drain helps keep needless items out of a drain. & STURDY: This pond bottom drain is made of abs material, , sturdy and long lasting in use. This pool floor drain is a nice accessory that can keep your swimming pool clean and tidy. EASY INSTALLATION: Main drain for above ground pool is a direct replacement for the old and broken one. Properly keep the screws of main drain during installation, the screw is tightened on the floor drain cover. This floor drain does not have a sealing ring. Wide APPLICATION: Pool floor drain fits for most standard inground swimming pools, vinyl pools, ponds, spa, , water parks. If you want to use this one as the main drain of cement or concrete pool, it is also okay. size: Diameter 21cm Material: ABS colour: white Package Contents: 3 x Pool Floor Drain Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.