13"W x 7.5"H. Extreme Photoluminescent (Glow-in-the-Dark) Plastic sign and includes (2) self-adhesive arrow stickers. Durable, non-electrical, non-toxic, non-radioactive, explosion proof, minimal installation and maintenance expense, washable. Easy installation: Four corner holes and two-sided tape on reverse.

This sign is made to absorb and store energy from light and is immediately visible in sudden darkness. 5 minutes of light exposure (fluorescent, mercury vapor or metal halide light) on the face will provide 26+ hours of illumination.

This sign is designed to conform to UL/ULC Standards, following their guidelines for EXIT stroke height/width requirements, darkness of red color, strength of photoluminescence, etc.

Also, the photoluminescence of this sign meets or exceeds many DIN & ASTM Standards & Codes, click the link below for the complete listing: Current Standards & Codes that this product MEETS or EXCEEDS