The vinyl window flat trim comes with commercial grade self adhesive tape. Peel the paper and stick to the window frame. Tape is 3/4" wide on the back of trim. Deep grooves in the back every 1/4" allows you to reduce the width of the trim in 1/4" increments. Can be used for interior or exterior applications. 1.75 Inch Flat Trim $8.25 2.25 Inch Flat Trim $9.25 Click here to purchase trim using paypal