R38T8 SQ Trolley - Front Adjusting

R38T8 SQ Trolley - Front Adjusting used on both 1.5" and 3.5" metal doors up to 450lbs (weight distributed between both trolleys). 8" Front Adjusting bolt for easy configurations. Packaged with PB301EC End Caps. Front adjustment, steel, ball bearing, trolley allows for easy horizontal adjustment of door placement. Simply turn horizontal adjustment bolt after installation with a wrench.