Christy® underground enclosure box is 12 inches deep with a 20 x 15 inch opening. Box is constructed of reinforced concrete with a composite cap and has straight walls. Alternate manufacturer number: N09.
Specifications for the No 9 electrical underground box
Material: High Density Reinforced Concrete
Weight: 90.0 lbs
Style: Open Box - Straight Sides
Dimensions: Top outer diameter - 14-5/16 x 19-3/4 inches; Bottom inner diameter - 10-1/4 x 16-3/4 inches; Height 12 inches