nVent Hoffman Type 1 Screw-Cover Pull Box Extender — 24 x 18 in., Gray Steel
The nVent Hoffman model A24184SU is a Type 1 screw-cover pull box extender engineered to fit standard 24.00 x 18.00 in. pull boxes. Constructed of gray steel, this extender adds depth to an existing enclosure, providing additional wiring space for branch circuit conductors, junction box applications, or other installations where the original enclosure depth is insufficient.
Key Specifications
- Enclosure type: Type 1
- Cover type: Screw-cover
- Fits box size: 24.00 x 18.00 in.
- Material: Steel
- Color: Gray
- Model: A24184SU
- Manufacturer: nVent Hoffman
Features & Applications
Pull box extenders allow electricians and contractors to expand the wiring capacity of installed junction and pull boxes without replacing the entire enclosure. This is particularly useful in retrofit and renovation projects where additional circuits must be routed through existing boxes, or when conductor fill calculations require more space than the original enclosure provides.
Type 1 rating is suitable for indoor, dry location use. Instruction manual and spec sheet documentation are available.


