Suction Liner, Closed Disposable System Safe, Ergonamic, Efficient, & Eco-Friendly new design. Specifications: Suction Liner: polyethylene Canister: Injection molded PC. Capacity (ml): 1,000 1,500 2,000 3,000 Features: Light, strong, transparent, & eco-friendly – Polyethylene-made: Closed design: Eco-Friendly: Replace flexible liner only when it is full. Safe: Minimize contamination risk. Hidden suction port: Eco-Friendly: A reusable tube, between canister & vacuum source, replaces the disposable one on the lid of the suction liner. Efficiency: One less step for installation, and two for removal. Safe: One less tubing to be dealt with. Triple protection: Filter: Automatically shuts off the suction when liner is full or when vacuum is turned off. Filter protector: Prevents spurting. Unidirectional valve: Prevents spilling. Easier removal:. Accordion fold design: Liner pops up from canister automatically, when liner is full or vacuum is turned off. Handle on the rim of the lid: : Canister: Injection molded PC: High transparency. Rigid Impact resistance. Long life span Small foot print – single-handed handling.