Check the listing for details. Norton Rixson Assa Abloy R7500 Door Closer. Color: Aluminum, Condition: New. Listed at 154.89 USD. Norton Rixson Assa Abloy R7500. Series Door Closer Finish: Aluminum/ 689 Open box for pictures. Extra protective packaging added to prevent shipping damage. See my other ads for more door closers. Thanks Closers for interior and exterior doors shall be full rack-and-pinion type with cast aluminum alloy body. Closers shall be surface mounted and shall project no more that 2-3/16" (55mm) from the surface of the door. Closers shall be non-handed to permit installation on doors of either hand. Closer fluid shall contain lubricity and anti-oxidation agents. Closer fluid shall maintain stable viscosity to allow door closer to perform in temperatures ranging from extremely high to as low as -40°F. Closers shall have multi-size spring power adjustment to permit setting of spring from size 1 through size 6. Closers shall have two non-critical valves, hex key adjusted, to independently regulate sweep speed and latch speed. Closers shall have backcheck cushioning controlled by a hex key adjusted valve. Closers shall have backcheck position controlled by a hex key adjusted valve. [Closers shall have adjustable delayed-action closing controlled by a hex key adjustable valve.] [Closers shall be highly corrosion resistant and shall have all external body components of aluminum, brass or stainless steel material and all fasteners of stainless steel.] Regular arm and top jamb closers shall have a non-hold open shoe permitting 15% ( +/–7-1/2% ) power adjustment. **Closers shall be enclosed in a [molded resin cover] [plated or sprayed metal cover].