Side Folding Full Enclosure Security Grilles 677

Side Folding Full Enclosure Security Grilles 677

​​​​​​​​​Side Folding Full Enclosure Security Grilles ​Model 677 features clear fire-retardant polycarbonate for visual access and nonbreakable durability. Visibility: 100% of 4-3/4″ (121 mm) viewable area. ​​​​​​​​​​​