Thank you so much for your acceptance Klinger’s standard length, we suggest you to use coping saw (เลื่อยฉลุ) to cut each sleeve please do not use any power saw. For the installation manual, Klinger has the standard version but we afraid that it will not have any point about caution for sleeve cutting. BTW, please wait for IOM from Klinger we are expediting Klinger to provide for submit vendor print.