Use this Non-Metallic Splice Kit in place of a junction box for splicing 12 or 14 AWG (300 Volt), 3-Conductor NM Cable with ground. Many contractors and homeowners doing wiring in a house have found this kit easier to use than a traditional exposed junction box. This NEC approved splice can be hidden behind a wall, but always verify this with your local building codes which may differ from NEC. Sold as 1 kit / pack. These splice kits are not reusable. This product is UL & CSA listed and it is NEC compliant - article 334-40b, 2005 & 2008 NEC.