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Arlington ARLFSR404BL Double Gang Non-Metallic Box 4 x 4in. (Black) (ARLFSR404BL)

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Arlington ARLFSR404BL Double Gang Non-Metallic Box 4 x 4in. (Black) (ARLFSR404BL)

Brand: Arlington           P\N: ARLFSR404BL          

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Availability: Usually Ships Same Day
Condition: New

Your Price: $699

List Price: $8.99


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Arlington Arlington’s 4” x 4” boxes deliver convenience and versatility in retrofit projects. They’re perfect for installing fire alarms or any type of signaling device. 1/2 inch and 3/4 inch knockouts, screw hole patterns for both 4 x 4 and dual gang devices, and an adjustable steel bracket that holds the box securely against the wall make this box a great choice for retrofit. It fits wall thicknesses up to 1 ¼ inches.


  • Screw hole patterns for 4x4 and 2-gang devices

  • 1/2" and 3/4" knockouts

  • Spring clip holds box securely against wall when screws are tightened

  • Weight rating: 10 lbs. for ceilings; 6 lbs. for walls


Less Hassle

Why waste time and go through the hassle of modifying a 4 inch box to hold a device when Arlington’s boxes make it a quick, all-in-one install. One of the best features of this product is the two sets of hole patterns that allow for retrofitting of dual gang or 4” x 4” boxes.

Quick Install

The install is a cinch and it doesn’t require any assembly – just cut your hole, put the 4” x 4” box in the wall, and tighten it down with the two mounting screws. The attached spring clip holds the box securely to the wall.


Arlington has been a leading manufacturer of quality electrical products and fittings since its founding in 1949. The company manufactures products that meet or exceed the changing needs of electrical distributors and contractors, with the vast majority produced in America.



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