Meet the ROWBROW: one of the most compact rowing machines money can buy. It weighs only 26lbs, so you can take it anywhere. It can be set up in doorways 25.5-47 inches. It can handle users up to 256lbs. To set it up, simply put it in your doorframe, secure the machine with the pull-up bar, attach the guide rail, unfold it, and place the seat on it to start rowing.