0001169232-03-003504 10-Q 2 20030331 20030509 DREW INDUSTRIES INCORPORATED 0000763744 3442 133250533 DE 1231 10-Q 34 001-13646 03690146 200 MAMARONECK AVE WHITE PLAINS NY 10601 9144289098 200 MAMARONECK AVE WHITE PLAINS NY 10601 10-Q 1 d55515_10q.txt QUARTERLY REPORT EX-99.1 3 d55515_ex99-1.txt CERTIFICATION