Preassembled, sealed lid saves time and eliminates confusion. Handle offers easy removal and disposal. Innovative ribbed design and superior tear strength allow easy insertion and removal. Color coded lids and brackets allow easy visual selection. Liner unit comes compressed for packaging, for maximum use of storage space. Uses Bemis hi-flow filter.- Reusable Outer Canister, 1500cc, Built-In Stopcock, Yellow Bracket Mfr. Direct