Pneumatic door mechanism:
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Dropping metal latches from a wooden door
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The metal door of the compartment opens,
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Closes, Sliding door closes
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The wooden door of the compartment opens,
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The wooden door closes
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Key ringing
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The metal door closes
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The metal door opens, closes with a creak
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Metal door open close
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Refrigerator freezer door open, close
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Take a bunch of keys
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Hydraulic door
★★★★★