In case you’re in almost any question about fitting the SwitchBot Roller Blind, There's a 10-moment online video on SwitchBot’s Site and YouTube that takes you thru Just about every stage with distinct Guidance, from measuring up, to adjusting the curtain box and cutting the fabric, to the final 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