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Carlon Non-metallic Boxes & Accessories

Carlon® is recognized as the Industry Standard in non-metallic boxes. 

Carlon® Deep Blue™ multipurpose non-metallic electrical box. Carlon’s most versatile non-metallic box ever. Available now! 

  • Captive nails and internal screw guides - for vertical or horizontal mounting 
  • Break-off flange - for new or old work 
  • Large capacity - for dimmers and larger switches 
  • Carlon’s largest standard single gang at 24.5 cu. in.
  • Carlon’s largest double-gang at 48.2 cu. in.  
  • Suitable for wood and steel studs
  • Voltage divider available for 2-gang box



Safe and Durable - Carlon® non-metallic boxes don’t conduct electricity and don’t corrode.

Quick Installation - Expect fast installation with Carlon non-metallic boxes because they use knockouts or auto-clamps to secure the Romex or wire.

Fire Resistant - All Carlon boxes have a minimum two-hour fire wall rating and are UL listed.


Carlon Blue® PVC boxes
Carlon non-metallic boxes feature PVC construction for easier installation, greater performance and lower installation cost. Designed and listed for use with nonmetallic sheathed cable in accordance with Article 314 of the National Electrical Code®, they make fast work of any residential or light commercial application. Look for the trademarked color blue to be sure it is a quality Thomas & Betts PVC Box.

Carlon SuperBlue® boxes
Carlon Super Blue provides all of the desired features of a PVC box with the strength and durability of the heavy wall boxes. Rigid enough not to flex when nailed to a stud and strong enough to withstand a hammer blow in cold temperatures.

Carlon Black Polycarbonate boxes 
Carlon non-metallic boxes feature a rugged polycarbonate construction to withstand extreme temperatures. The boxes will not distort or soften in heat and they won’t become brittle in the cold.

Carlon High Heat boxes
These new 2-hour fire-rated boxes can be installed in the same stud cavity of a shared two-hour wall. Ideal for multi-family construction.

Carlon Phenolic boxes
Carlon phenolic boxes can be installed in the same stud cavity of a shared two-hour wall. They may also face opposite directions with only a 3" horizontal separation – ideal for multi-family construction!

Carlon Low Voltage
Carlon adds to its box offering a series of brackets specifically for low voltage applications. These come in orange.