This zip pump in the submersible bag to prevent clogging. Increases pump life while reducing cleaning maintenance. Fits most pump sizesup to 1000 GPH. Ideal for ebb, flow & drip hydroponic systems. High quality filter material keeps pump clear of debris. Gusseted bottom ensures proper pump seating. Pump can be easily removed from bag for cleaning. Secure, corrosion-proof zipper at top for easy closing. This product weighs 0.1 lb. Measures 10-1/2" Width by 13-1/8" Length.