One Dock-Top deck panel. Panel measures 47-5/8" x 11-1/2" nominal. Constructed out of glass reinforced copolymer with UV inhibitors added. Slotted design meets environmental criteria. Deep rib design for added strength. Panels can be connected together with optional Dock-Top deck clips. Use 6 clips to make one 4x4 drop-in section using 4 panels. Polypropylene copolymer material with non-skid surface. Panel spans 24" with 1-3/4" flat surface at end and center support. Optional deck lockers can be installed to secure panels to dock framing to eliminate blow-off and slippage. More details at www.dock-top.com. Slate gray only. Four panels.