For an incredible selection of our premier exit signs, PermaLight® products bring you the most attractive photoluminescent signs that light the way for years to come. Effortlessly install these single and double-sided signs that require no internal electric source; choose from sturdy, rust-proof aluminum or sleek acrylic signs, which feature pre-drilled holes for simple installation. Each photoluminescent Exit Sign glows for over 90 minutes in an emergency, so you can rest assured that everyone can find their way to safety, even if power fails. Take the easiest step toward reliable safety with the PermaLight® Exit Sign series. Save money on electrical costs with these zero-energy photoluminescent exit signs. The signs easily pay for themselves over time.