VELUX Conversion Kits are to upgrade Pre 2001 windows with 15mm glazing to the new 24mm pane for GGL / GGU Centre Pivot Windows. If you're not sure; please provide us or VELUX with your window frame code to ensure you get the correct kit. Contents Glazing Profile (Goal Post) Beipack Filter rail Frame striking bead cover Sash striking bead cover Bottom sash cover over glass (with pre-fitted sealant) Mounting bag Glazing clips Screws for cover over glass Screws for glazing clips Screws for glazing profile/sash profile (with sealant) Screws for sash and frame striking bead covers The amount of clips and screws will depend on the size of the conversion kit.