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2. High-speed door - Wikipedia

   en.wikipedia.org/wiki/High-speed_door

   High Speed Doors are an evolution of the traditional roller shutter door (hence the alternative name they are often given of Rapid Roll Doors). They are primarily designed to give higher operating speeds, improved sealing and sustain a higher number of opening & closing cycles than traditional roller shutters, without compromising reliability ...

3. Garage door - Wikipedia

   en.wikipedia.org/wiki/Garage_door

   A typical single-car garage roller door has a preloaded spring inside the rolling mechanism. The spring reduces the effort required to open the door. Oversized roller doors in commercial premises are not sprung (except in the US), and a manual pulley and chain system or a geared motor is used to raise and lower (roll up and roll down) the door.

4. Roll-on/roll-off - Wikipedia

   en.wikipedia.org/wiki/Roll-on/roll-off

   Roll-on/Roll-off car carrying ship being boarded by articulated haulers at the Port of Baltimore RoRo ports and inland waterways of the United States. Roll-on/roll-off (RORO or ro-ro) ships are cargo ships designed to carry wheeled cargo, such as cars, motorcycles, trucks, semi-trailer trucks, buses, trailers, and railroad cars, that are driven on and off the ship on their own wheels or using ...

5. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

6. Roller shutter - Wikipedia

   en.wikipedia.org/wiki/Roller_shutter

   Roll shutters on windows. Security roller shutters in a dead mall. A roller shutter, security shutter, coiling door, roller door or sectional overhead door is a specialized type of door or window shutter consisting of multiple horizontal slats, bars, or web systems interconnected through hinges. The mechanism involves lifting the door to open ...

7. Roll-off (dumpster) - Wikipedia

   en.wikipedia.org/wiki/Roll-off_(dumpster)

   Roll-off container sizes are determined by the amount of debris they can hold, measured in cubic yards. [2] Container sizes commonly found in the United States include 10, 15, 20, 30, and 40 cubic yards, equivalent to approximately 7.65 m³, 11.47 m³, 15.29 m³, 22.94 m³, and 30.58 m³.