How to Create the Most Compact 2x2 Hidden Piston Door in Under 50 Seconds! « Minecraft :: WonderHowTo
Minecraft: Timed 2x2 Flush Piston Door (Jeb Door) Opens from both sides [1.16 Redstone Tutorial] - YouTube
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Most Compact Jeb Door (Concealed 2x2 Piston Flush Door) [Updated] - Redstone Discussion and Mechanisms - Minecraft: Java Edition - Minecraft Forum - Minecraft Forum
Minecraft Tutorial: Most Compact 2x2 Flush Piston Door Ever Created! - YouTube
How to Create the Most Compact 2x2 Hidden Piston Door in Under 50 Seconds! « Minecraft :: WonderHowTo