Package:





For 1 solar panel you need 4x rail 4x end clamp 4x roof hook

For 2 solar panels you need 6x rail 4x end clamp 2x middle clamp 6x roof hook



For 3 solar panels you need 8x rail 4x end clamp 4x middle clamp 8x roof hook



For 4 solar panels you need 10x rails 4x end clamp 6x middle clamp 10x roof hooks