Designed for metal and wood frames. Color-coded, the white area contains the adhesive, the blue area is a non-adhesive area. Of its 4” in width, 2-1/2” are adhesive backed, while the remainder has a predominately nonadhesive backing. Intermediate 1/4”-wide strips are placed approximately every 2” within this non-adhesive area to attach the tape securely to the frame, but allow easy removal. Available in 4” width on 60-yard rolls (18 rolls/case).