Cal-Royal GRB20 Omega Privacy Knob Lock


Usually Ships: 2-3 Business Days
  • Heavy-Duty, BHMA/ANSI Grade 1
  • ANSI F76 Function
  • UL Listed, 3 Hour Fire-Rated

Cal-Royal GRB20 Grade-1 Cylindrical Lock, Omega Knob, Satin Stainless Steel

Quality Designed and Engineered for Commercial Buildings

ANSI F76 – Latch bolt operated by knob from either side. Outside knob is locked by push button inside and unlocked by emergency release outside. Turning inside knob or closing door releases push button.

  • Meets or exceeds requirements of BHMA/ANSI A156.2 Series 4000, Heavy Duty, Exceeds 800,000 cycles
  • UL listed 3-hour rating, conforms to standards UL10C and UBC 7-2-1997
  • Optional thru-bolt installation
  • Heavy-gauge cold-rolled spindles add greater strength and security
  • Long bearing length for smooth, wear-resistant operation
  • Completely Reversible Handing


US32D (630) Satin Stainless Steel

Lock Function



Heavy Duty




1/2" throw – 1-1/8" x 2-1/4" face


4-7/8” x 1-1/4” ASA/ANSI strike with curved lip to meet ANSI A115.2 door frame preparation

Fire Rating

UL/cUL listed up to 3 Hours – UL symbol on the latch front



Door Thickness

1-3/8" to 1-3/4"

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Cal-Royal GRB20 Omega Privacy Knob Lock