This solar decking tile made from recycled PVC. Solar and recycled built-in photocell automatically turns on the LEDs at night. See where you are stepping without any wires or electric connections. Place this solar decking tile anywhere. Rugged tempered glass solar panel. Each panel measures: 12" x 12", surface area measurement: 11.5" x 11.5", height 1.125"rechargeable, replaceable AAA 600 mAh ni-mh battery included.