Tape from the inside face of the wall or corner. Spots are scaled from the plans. For “middle of the wall”, measure the real wall and split it. Tap any box in the 3D to see the tape lines.
Matches the Amazon cart, plus Cat5e and wall plates from Menards. Prices checked .
Room positions are scaled from sheet S4 of the MMM Engineering set (S19825WI, 6/20/2025). Measure on site before drilling.