The GRI 180 Series is the industry standard 3/4" diameter recessed steel door switch set with 12" leads. 180 Series Standard Features -Lifetime Warranty -Colors: White, Mahogany, Grey or Black -UL and ULC Approved -180-12 & 184-12 UL 10C Fire Rated -Available in Closed Loop, Open Loop and SPDT -3/4" and 1" Diameter Mounting -Standard 12" Leads or Terminals -Self-Locking -Solid, One Piece Design -7/8" Diameter also Available - Call Factory -Switches or Magnets are Available Separately -Standard 1/2"+ Gap on Steel -Wide Gap 1"+ Gap on Steel -Supervisory Loops Available