C.R. LAURENCE 255D185 CRL Bronze 5" x 1/2" Offset 185" Long Saddle Threshold. These CRL Offset Saddle Thresholds are extruded aluminum using 6063 and 6493 aluminum alloys. This Threshold meets ANSI/BHMA Standards, and is access compliant, fire rated, and UL Listed. Furnished with screws for installation. Available in two sizes and finishes..