An electrical storage system includes a first electrode, a second electrode, an insulated separator, and an electrolyte. Also, a refrigerating apparatus and the like using the pipe fitting are provided. The E-mode polarizer is a linear dichroic polarizer and enables extraordinary light to pass. One or more stop barrels are secured on the base frame and slidably and loosely received in the respective openings or sleeves of the deck to limit the relative lateral movement between the deck and the cushioning member and the base frame.