Does the arm collapse for storage? April 28, 2020 22:20 Updated The mounting arm does collapse for storage and adds only 5 inches to the WaterRower storage footprint. Related articles What happens if I cancel my subscription? How do I know if my WaterRower model is Upgrade Package compatible? Do I need a Commodule to use the Ergatta Upgrade Package? Will the wood stain match my rower? What are the tablet specs?