The 800 series patio door handle set by Ideal Security adds elegance to your patio door. Its soft round lines and smooth handle portion make opening the door more comfortable. The plastic locking button and screw covers provide a classic appearance. The handle is constructed from die cast zinc and powder coat paint that provides long lasting durability. This replacement patio door handle set is for surface mount installation, meaning that it’s installed on the face of the door. The 802KBL replaces a patio door handle with the exact same appearance and size as this. If your handle does not look like this, it may not fit. The distance between the screw holes is 6-9/16" (6.56" / 16.76 cm/167 mm). The 802KBL includes the inside handle with concealed screw caps, the outside handle with key lock, two keys, the strike and mounting screws. The key lock is for convenience and is not high security. If you are looking for a no-key outside handle, you also need to purchase the 851-1E969 part available on the Ideal Security website. If you are doing a new installation, please refer to Ideal Security’s FAQ entitled “Do you have a drilling template for SK800KBL?” on the Ideal Security website.