Single gang fiberglass adjustable electrical box for use with nonmetallic sheathed cable.



The 1099-AB is the only adjustable outlet box in the industry that is made from fiberglass. This material provides unmatched strength and durability, while also being lightweight and easy to handle. The box has the most travel distance for an adjustable box in the industry at 2″ of travel, making it the perfect solution for a variety of wall finishes.

  • Carton Quantity: 50
  • Carton Weight: 29
  • Box Type: Wall - Switch/Receptacle
  • Box Features: Adjustable box (SLIDERBOX®)
  • Installation Type: New Work
  • Height: 3.83 in
  • Width: 3.375 in
  • Depth: 3.563 in
  • Volume: 22.5 cu. in.
  • Number of Gangs: 1

Product Info

  • Brand: SLIDERBOX
  • UPC: 85339988387
  • Carton Weight: 29 lbs 13.154 kg
  • Country of Origin: United States of America
  • Patents: Patent Pending
  • Material: Fiberglass reinforced polyester
  • Additional Materials: Galvanized steel brackets and plated carbon steel fasteners
  • Features:

    • fiberglassBOX® material, so no putty pad is needed when
    following the Uniform Building Code (3″ minimum distance
    between boxes).
    • Sound rated up to STC (Sound Transmission Class) rating of 54
    • 0″-2″ of adjustability to fit most wall finishes and arrives
    preset for 1/2″ standard drywall applications.
    • 6-32 UNC tapped holes for easy device mounting
    • Corrosion resistant metal bracket for a solid hold to a wood
    or metal wall stud.
    • One screw design for easy adjustability.
    • Knockout for a 1/2″ NM connector

  • Application:

    New work residential construction 2 HR fire resistive walls

  • Standards:

    ANSI / UL 514C: File No. E30594

  • Fire Classification:

    Fire Test of Building Construction Materials
    ANSI / UL 263: File No. CEYY.R9379 (Category / File No.)

    Note: Products must also be certified to: ANSI / UL 514C

    Fire Resistance Classification in Wall Assemblies 2-Hours or less
    Shall be separated by a horizontal distance of not less than 3 inches

    Note: For more details please refer to the UL fire resistive directory and Allied Moulded’s CEYY.9379 (Outlet boxes and fittings classified for fire resistance)


Single gang fiberglass adjustable electrical box for use with nonmetallic sheathed cable.

Additional information

Weight 29 lbs
Dimensions 21 × 9 × 12.5 in


There are no reviews yet.

Be the first to review “1099-AB”

Your email address will not be published. Required fields are marked *