Metal Barrier Frame Width 48 in Height 48 in Material Steel For Use With Quietsite(TM) Noise Barrier Panel Resistant To UV Protected Water Characteristics (1) Base Will Hold (2) Frames (2) Base Needed if Only (1) Frame Quick and Easy Assembly by One Person Use Indoors or Outdoors Standards NFPA 701 Method 1 Includes (2) Frame Pieces (2) Spring Locks (2) Stacking Pins