This coating allows graffiti to be wiped off without damaging the paint. Usually, returns mounted on a straight length of curb will not be damaged by vehicles. Libraries from the north woods of Minnesota to the deserts of California accept print and audio-visual materials in the outside returns without damage. Common sense dictates how often a return should be emptied in extreme weather conditions. The pushbutton combination locks are standard on libraries, the key locks are standard on video returns for video stores.
Most returns can be special ordered with the non-standard type lock.
The adjustable cart also makes it easier for a person to empty a cart while sitting. Therefore it can be used for staff that are unable to stand while emptying cart. Unfortunately, every buiding mounted return or depository does provide an opportunity for arson. This cart is also available with a heat activa ted fire extinguisher to put out a fire in the cart. A weatherhood should be used when a wall return is on an exposed exterior wall.