For those who’re in almost any doubt about fitting the SwitchBot Roller Blind, There's a 10-minute online video on SwitchBot’s Web site and YouTube that takes you through Every single stage with obvious instructions, from measuring up, to adjusting the curtain box and chopping the fabric, to the ultimate mounting. https://www.google.com/maps/place/Design+Blind+And+Drapery+Service,+Inc/@27.181062,-80.24557,15z/data=!4m6!3m5!1s0x88dedd13c6303339:0x7e9557fd3e2b0c9f!8m2!3d27.181062!4d-80.24557!16s%2Fg%2F1tp08ynf?hl=en-US&entry=ttu&g_ep=EgoyMDI1MDMxMS4wIKXMDSoJLDEwMjExNDU1SAFQAw%3D%3D