PLEASE NOTE: THESE ARE ONALY AVAILABLE AS KITS: These are replacement weather strip options for the Semco clad compression tilt double hung manufactured from 1980 to 1996. Your unit must have the compression tilt style plastic jamb liners to work. all weather strip chosen comes in packs of 4 with each piece being 72'' long. (example each pack comes with a total of 24ft of weather strip. It is the only way these kits are available. View all drawings above to make your choices. Special order no returns. Allow 1-2 weeks for shipping.