3M 3635-20B & 22B Blockout
3M 3635 - 20B & 22B Blockout is a cast, matte, 100% opaque, white and black blockout self adhesive film. 3635-20b: Uniformly white on face side with a matte surface. 3635-22b: Uniformly black on face side with a matte surface.
- Used to control light flow in internally illuminated signs
- Up to 5 years vertival durability
- Illuminated Signage