Velux deck mount fixed skylights give the opportunity to the home owner to install a roof skylight into an existing roof, or as part of new construction. This model is sized to work with all types of stock built curbs. Since the FCM has no designated top, bottom or sides, you can install the skylight in whatever direction you want. A maintenance-free exterior, combined with a UV-resistant ABS interior and integrated gaskets, seals out the water, wind and hassles for years to come! Mahy options such as different glazings, roof flashings and pleated shades also can enhance your skylight's features. Velux has many other sizes and styles available. Call for details.