Features: OOTDTY brand new and positive fresh and immoderate quality. 4 inch water membrane for shell end cover. Made of positive ABS material, durable. 4021 4040 4080 Universal end Easy set up Specifications: Material: ABS Weight: 400g Diameter: About 13/5" Package Includes: 1x RO Membrane Housing End Seal Note: 1 allow 1-2cm errors because of handbook measurement, simply be sure you don't intellect earlier than you order. 2 to the difference between diverse monitors, the picture may not replicate the actual shade of the item.