The Defender Gate. This barrier gate has unmatchable design and components, with the added safety of an additional cross-beam. Everything needed to install (minus power tools) is included on shipment. The Defender Gate is the last barrier gate you will ever need. It is machined, fabricated and assembled in the USA. The gate stands 42" tall with an all steel construction. The steel barrier gate is held together by heavy duty plate steel hinges that contain 1" pivot pins with oilite bronze self oiling bushings. Prevent loading dock falls with the best impact barrier on the market. The Defender Gate 20 is also available with our Security Guard attachment. This attachment adds additional barriers above, between, and below the mail rails of the gate to prevent access to dangerous or restricted areas.