Thanx for the replys.
I'm not sure of the brand but it is the most common you'll see at the home improvement centers. A simple 48" x 48", the frame that holds the plastic dome part in place is held on by two screws on each of the four sides.
I did look on line at a few different sites and they quote close to $300.00 for the plastic dome part alone.
I guess the reason that I am so floored by this price is because when I purchased this skylight I thought this was a common size and I would always be able to easly replace the dome if needed.
I also needed the same thing for one that is 24"x24" and I had to buy the whole thing which was only $49.00. I took the dome off and simply replaced the old broken one , it took about five minutes. Now I will take the frame part to an aluminum recycler and see if I can get a few dollars for it.
I phoned a window and door company and they said that I'd have to replace the entire skylight. As you know this would require removing and replaceing roofing material and all that. :confused: