Although satisfactory, this product left much to be desired. I purchased this set with the intention of detailing a warehouse sans chimney, and while the detail and overall quality are good, the product is nearly useless as intended on a modern layout.
The length of the downspouts measure a mere HO Scale 12.5 ft (less than 2 actual inches) much to short for any industrial or commercial building. Same with the gutters, except these measure 21 ft in HO Scale (about 3 actual inches). This product would be suitable for older era layouts or single story residential details.
I found use for the gutters as a light housing on a billboard, the rest will go to the parts bin for future use.