Delta GB5 34/46Z door cylinder

The Delta GB5 34/46Z is a high-security profile cylinder designed for use in reinforced and anti-burglary doors. It belongs to the GB5 series, which is characterized by its 6-pin mechanism and a specialized gear (rack) drive system (denoted by the 'Z' in the model name) that ensures smooth key operation with minimal resistance. This specific model features a 34/46 mm offset, making it ideal for doors with a thickness of approximately 56-57 mm, such as the Delta Special or Premium series.

The brand Delta is a prominent Polish manufacturer specializing in security doors, locks, and entry systems for both residential and commercial applications. While some components in the global hardware supply chain may be sourced internationally, Delta products are primarily designed, engineered, and manufactured in Poland. The brand is owned by Delta Zbigniew Różycki, a private Polish company headquartered in Katowice, which has maintained its independent ownership and focus on the European security market into 2026.