R38T9 SQ Trolley - Front Adjusting

R38T9 SQ Trolley - Front Adjusting used on 1.5" or 3.5" metal doors up to 450lbs (weight distributed between two trolleys). 9" front adjusting bolt for easy adjustments. 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.