Weather Stripping Door Seal Strip - Soundproof Q-Shaped Foam for Exterior Door Frame, Large Gap Seal, Noise Cancelling, Easy to Install (Black, 40FT)No light ingress: Our weather stripping door seal are made from a dark grey foam core that completely blocks light ingress around the door. Lower Energy Costs: This weather stripping protects your home from air leakage in both winter and summer, while increasing comfort and saving energy. Fits Most Doors: Door seal strip are flexible to fit slots from 0. 35" to 0. 59" and will fit most doors. Please check the slot you need to seal before ordering.