Which device controls the speed and closing action of a door?

Prepare for the Seabee BU A‑School Building Basics Test. Boost your skills with flashcards and multiple-choice questions, with hints and explanations provided. Gear up for success on your exam!

A door closer is specifically designed to control both the speed and closing action of a door. It is a mechanical device that ensures a door closes securely after being opened, which enhances safety, security, and energy efficiency in a building.

The door closer works by using hydraulic or pneumatic force to regulate the movement of the door as it closes. This allows for a smooth and controlled closure, preventing slamming and ensuring that the door fully engages with the frame for proper sealing. The adjustable features of a door closer can also allow a user to set the closing speed and latching action to meet the specific needs of a space, making it a vital component in door hardware.

Panic hardware, mortise locks, and cylinder locks do not serve the same function. Panic hardware is primarily designed for emergency exits, providing a quick and easy way to exit a building. Mortise locks and cylinder locks are primarily locking mechanisms that provide security but do not control the door's closing action or speed.

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