We recommend consulting with an engineer or contractor to determine the "side load" strength of the two points you will be attaching your line to. Some Ninja families have even found ways to install the hanging obstacles directly into a ceiling so no line is needed! We love to see you think outside the box, get creative and have fun. But whatever your idea is for an indoor Ninjaline, whether it’s in the garage or basement, remember to consult with an expert for safe installation.