I have EIGHT (8)... CQC-7 Moonglow back spacers w/ghost jade G10 sandwiching a .125" thick, long persistence, green Moonglow acrylic called AfterGlow. This material was used for the emergency signage in the Pentagon and various other govt buildings following the 911 attacks. They are $16.00 ea and shipping is free. ***US sales ONLY***. PayPal, checks, money orders... all good.
These fit the back spacer model CQC-7... they do not fit the newer standoff model...
For those having an interest... here's the back story about this Afterglow acrylic...
Even today, most buildings and facilities have insufficient emergency lighting despite meeting local codes. Electrically illuminated EXIT signs located at door or ceiling level are frequently obscured in a fire by heavy smoke. Improper system maintenance and inadequate maintenance oversight can result in an exit path marking system with less than 100% reliability. Electrical systems (primary and backup) can fail during an emergency event due to damage from heat and firefighting water. When the Pentagon was attacked on 9/11, they had to turn the back-up power off to prevent firefighters and other first responders from being electrocuted. Photoluminescent exit path markings are always there. They dont rely on external power and dont require regular maintenance.
Photoluminescent, also known as "glow-in-the-dark", materials incorporate inorganic phosphors into a carrier or substrate. The substrate might be a solvent-based or water-based paint, a magnetic- or adhesive-backed tape, a plastic extrusion, an acrylic or polyurethane casting or injection molded item, or a vinyl film. These PL phosphors absorb light in the visible and ultraviolet wavelengths and release visible light in what is often termed an afterglow. This afterglow luminance decays over time. The Extinction Time is the time for the luminous intensity of the afterglow to decline to the lower luminance limit of human perception for dark-adapted eyes (032 mcd/m²). More important is the Functional Time. For this product the minimum Functional Time is 8 hours, more than enough for everyone to exit. Dark adaptation of the viewers eyes results in a perceived brightening of the material. In all cases, the critical performance characteristics are the Luminance Performance (i.e., the initial brightness of the material and how long it will glow). PL materials will continue to perform even if damaged.
These fit the back spacer model CQC-7... they do not fit the newer standoff model...
For those having an interest... here's the back story about this Afterglow acrylic...
Even today, most buildings and facilities have insufficient emergency lighting despite meeting local codes. Electrically illuminated EXIT signs located at door or ceiling level are frequently obscured in a fire by heavy smoke. Improper system maintenance and inadequate maintenance oversight can result in an exit path marking system with less than 100% reliability. Electrical systems (primary and backup) can fail during an emergency event due to damage from heat and firefighting water. When the Pentagon was attacked on 9/11, they had to turn the back-up power off to prevent firefighters and other first responders from being electrocuted. Photoluminescent exit path markings are always there. They dont rely on external power and dont require regular maintenance.
Photoluminescent, also known as "glow-in-the-dark", materials incorporate inorganic phosphors into a carrier or substrate. The substrate might be a solvent-based or water-based paint, a magnetic- or adhesive-backed tape, a plastic extrusion, an acrylic or polyurethane casting or injection molded item, or a vinyl film. These PL phosphors absorb light in the visible and ultraviolet wavelengths and release visible light in what is often termed an afterglow. This afterglow luminance decays over time. The Extinction Time is the time for the luminous intensity of the afterglow to decline to the lower luminance limit of human perception for dark-adapted eyes (032 mcd/m²). More important is the Functional Time. For this product the minimum Functional Time is 8 hours, more than enough for everyone to exit. Dark adaptation of the viewers eyes results in a perceived brightening of the material. In all cases, the critical performance characteristics are the Luminance Performance (i.e., the initial brightness of the material and how long it will glow). PL materials will continue to perform even if damaged.
