my 400hps scrog(ww) used to yeild 10-14oz and my cfl scrog yeilded 4-5oz. when you put the screen on you puswh it onto the plant so a 16 inch plant could be only 8-10inches after the screen is installed. i have had plants that were well over 3ft tall be shortened to 20" or so after installing the screen. i always had better results pushing the screen onto a larger plant rather than letting a smaller plant grow up to the screen. good luck with the landlord.