Deep, fits in 2 in. Installation: alignment guide slides housing in place for a tight fit; temporary clip holds fan in place, so installer has 2 hands free to insert motor; templet to assure hole size and protect parts from dust; and slide and snap-in junction box and duct collar.Certifications: UL Listed for tub/shower enclosure when GFCI protected, and Home Ventilating Institute (HVI) certified. Code compliant: can be used to comply with ASHRAE 62.2, LEED, IAP, and California title 24. Powered by SixBit's eCommerce Solution. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Indoor Air Quality & Fans\Exhaust Fans & Ventilators". The seller is "dchomesupply" and is located in this country: US. This item can be shipped worldwide.