A louver mount is hardware that attaches the louver to the louver frame. Louver flange kits contain louvers and mounting hardware that can be used to fill gaps in the louver window. Here is some additional information about this Louver Flange Kit : FOR USE WITH: Aluminum Combination Louver Dampers And Drainable Fixed Louvers, LENGTH: 20-1/2", INCLUDES: Mounting hardware. This item has been restricted from sale in the following state(s): []