Why buy a custom skylight when a standard one will fit?
Velux makes a curb mounted skylight called the FCM Model. This is a great skylight but the only problem we have found is that the standard sizes don’t always fit existing curbs. The solution we have found is an extendable curb or curb adapter that transitions in between the curb and the FCM. The advantage to this is you get the quality skylight from Velux and you don’t have to wait for them to make you a custom one, which also costs more.
A standard 2×4 skylight curb adapter will cost about $185.00 plus freight. (around $35.00) There is no charge for boxing as we recycle other boxes that we receive freight in.