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NOTE – if recess is poured during construction it is recommended to fill the recess with plywood covering it with another plywood piece well overlapping the frame to protect the recess and the frame from accidental damage. Before installing the panel recess must be clean to ensure even surface for the panel to rest on.
RGB-200 bronze alloy entrance grate is constructed from T shaped extruded bronze treads assembled onto 5/16 inch steel rods.
Rods are spaced out every 12 inches.
High density polyethylene spacers placed between treads. On the bottom of the panel spacers extend past the treads, so the section would stay on spacers ensuring quiet operation.