Kirsch LockSeam Curtain Rod projection extensions Material: Metal Package Qty: Sold as each. Size: N/A This full kit will allow you to increase the projection or clearance of your LockSeam curtain rods by as much as 3 inches Availability: Kirsch LockSeam Rods and Components are typically in stock and ship in 1 - 2 days. Returns/Exchanges: Unopened Kirsch LockSeam curtain rods and accessories are returnable.