Constructed of corrosion resistant stamped 304 stainless steel. Designed with a slotted plate that fits over a fixed post they are used in conjunction with a padlock to prevent removal when locked. Installs with seven #6 FH fasteners (not included). A 2-11/16" B 1-7/8" C 1-3/16" D 7/8" E 1/2" Fastener #6 FH