Please Note: This surge protector is for specialty Industrial 6-20/T- Slot Plug outlets. Please see second image for more details. Powder coated steel enclosure for maximum durability. 12/3 gauge 25 foot cord. 125VAC at 50/60hz. 900 Joules of surge protection. 2 mounting holes in the back of the unit. Lighted On-Off Switch Lifetime Guarantee: Digital Energy has been manufacturing quality electronic accessories since 1999! Customer satisfaction is our main priority so please don't hesitate to contact us with any questions or concerns. All DE surge products come with a Lifetime Warranty and hassle free returns! 20 AMP - 900 Joule Surge protector with 25 Foot Cable