Features:

• Heavy duty commercial storeroom ball knob
• It is UL listed for a 3 hour fire door
• The Keying features are a 6 or 7 pin SCC keyway with 2 nickel keys per lock
• The door range is 1 3/8-inch to 1 3/4-inch
• It has a standard 2-3/4-inch backset and standard T strike (1 1/8-inch x 2 3/4-inch). This is made out of cylindrical steel coated with zinc dichromate (corrosion resistance). Latch is operated by rotating inside knob or key in outside knob