Product Description This patio door clamp-style handle set is constructed of an extruded aluminum, and wooden pull inside handle, with a diecast-constructed outside pull that fits 4-15/16 in. mounting hole centers. It is a surface mount application that does not require nor include a keeper, as itft.s clamp reaches for, and engages onto the extruded metal framework. This handle set features a 1/4 inch profile and a 1/2 inch reach. From the Manufacturer This patio door clamp-style handle set is constructed of an extruded aluminum, and wooden pull inside handle, with a diecast-constructed outside pull that fits 4-15/16 in. mounting hole centers. It is a surface mount application that does not require nor include a keeper, as it's clamp reaches for, and engages onto the extruded metal framework. This handle set features a 1/4 inch profile and a 1/2 inch reach.