Was it tempered (exploded) or laminated (cracked but held together)? Most any auto glass shop can replace flat laminated if you have the old one for measuring. Contact Fleetwood customer service to see if they can help you any (they might even have your glass). Your coach is old enough that RV salvage yards might have some of them but not so old that they would have all been stripped and scrapped out by now.
Dave RVM#66 and Carol
1998 Pace Arrow Vision
Seeing the USA - 200 miles at a time