Supply company celebrates 30 years with Coleman Mobile Unit.

STERLING HEIGHTS, Mich. - The Coleman Mobile Unit trailer visited the Detroit area June 9 to help celebrate the 30th anniversary of distributor Calverley Supply.

The promotional trailer features the new Coleman Echelon line of residential heating and cooling products. As part the event, a "tent" sale, putting contest and raffle were held.

Calverley Supply has been a Coleman distributor for more than 10 years.