This Is The Complete Bottom Lid Assembly Used On The DLX4 And DLX5 Robotic Pool Cleaner. This Fits On The Bottom Of The Cleaner And Is Where The Bag Attaches. Material: Basically White Plastic With A Few Yellow Plastic Items Along With The Metal Bag Supports, Springs, And Screws Special Note: This Very Closely Resembles The 99919116 Bottom Lid Assembly But The Bag Support Is Different. The 99919116 Bag Supports Are Straight Across The Top. The Bag Supports On This Unit Have A Double Bend On The Top Of The Bag Support Manufacturer Part # 99919117 Fits the Following Cleaners: Dolphin Triton Dolphin Deluxe 4 Dolphin Deluxe 5 Dolphin Dynamic Dx6 Dolphin Dx6 Dolphin Dlx4 Dolphin Dlx5 Dolphin Edge Dolphin Discovery Dolphin Dc6