These are for the repairable air volume controls. Each kit includes a diaphragm, springs, screws, nuts, ball and seal which are needed for a quick and simple repair job.
1.800.561.3164
25 Whaley Avenue
P.O. Box 310
Milverton, Ontario
N0K 1M0 Canada
Boshart Industries LLC
3601 Woodpark Blvd. Charlotte, NC 2820 USA