Provides a Flexible Seal Against Insects. Tear Strips Allow for Adjustment of Flap Width. Get a flexible seal against insects with this extruded CRL Vinyl Bug Strip . The flexible flap on the strip rubs against sliding glass doors so insects cannot penetrate the gap between the screen and glass doors. The 1-7/16 inch (36.5 millimeter) wide flap has tear strips so you can choose a flap widt . Color: Black. Length: 84 in (2.1 m). Minimum Order: 1 Strip.