The North States Gate 11-Bar Extension is an accessory for the model 4820 North States Auto Close Gate. This item effectively expands your auto-close gate by giving it an additional 31" in width. It is very easy-to-install and is designed for use with the North States Auto-Close gate only. Made of heavy metal construction, the North States Gate 11-Bar Extension will give you many years of durable service. Other extensions available. With a maximum of three extensions 1, 2, 5 and 11- bar extensions expand your standard gate up to 125", extensions are sold separately.