For Use With the N666 - 6" (152 mm) Round Speak Thrus
This solid Aluminum CRL Spacer Ring is used when installing a N666 six inch (152 millimeter) Round Bullet Resistant Speak-Thru into glazing material less than 1-3/16 inches (30 millimeters) thick. Depending on the thickness of the glazing material either one or two rings will be required.
Used When Glazing Material is Less than 1-3/16" (30 mm) Thick
For Glazing Material: 1/4 to 3/8 in (6 to 10 mm) Thick
Minimum Order: 1 Each