Walthers Cornerstone's 933 - 4077 HO Scale HVAC units are excellent details for industrial or commercial buildings, especially modern windowless structures where air handling is essential. These modern rooftop air conditioners are also used in building renovations. This kit comes with parts for eight HVAC units, four each of two styles. They add great detail to modern or modernized rooftops, are typical of large - capacity air conditioners used in many industries and public buildings, and are perfect for modeling roof - or ground - mounted equipment. It's an easy - to - build plastic kit molded in the appropriate base color. Check out all Cornerstone structure details and read more about the Cornerstone Modern Industrial Park series.

Using these HVAC units is a breeze. First, take out the parts from the two sprues in the kit. You'll have enough parts to build eight units, with four each of two different styles. Start assembling the units according to your preference for rooftop or ground - mounted equipment. When building, be careful not to break the small plastic parts as they are delicate. Once assembled, you can place them on your model industrial or commercial building. For maintenance, keep them away from sharp objects to avoid scratches. If they get dirty, you can gently wipe them with a soft, dry cloth. Enjoy adding these great details to your models!