To view PRICES, return to Polyurethane Entrance & Window Systems The Crossheads below are specifically sized for use with our Entrance & Window Systems. Our Polyurethane Door and Window Caps can also be used as Crossheads. To view PRICES, return to Polyurethane Entrance & Window Systems The Crossheads above are specifically sized for use with our Entrance & Window Systems. Our Polyurethane Door and Window Caps can also be used as Crossheads.