A casement window or any wide awning windows needs an Interlocking Snubber to maintain the position of the window sash in the frame. This concealed hardware is also helpful with double-hung windows to improve the bottom and top rails' seals in the closed position. It is designed to well fit into the hinge track portion of the system between the two hinges. This metal interlocking bracket is attached at the center of the hinge side of a casement sash an Awning sash. It draws the sash tightly against the window frame weather-strip to optimize performance. The products in this section have been thoroughly field-tested so be assured of quality, dependability, and sturdiness. They have been polished with a corrosion-resistant finish and will last a lifetime. If you need any type of information or clarification about the product, you can chat with our online executives to help you out.