my screen is 15" x 10" and i would like to find a cheap light fixture that roughly fits that size. as of now the only thing i can find is the 10" round clip-on drop light with a cfl bulb screwed into it ,like i use now. i would like to find something square so i can butt it against my scrubbers square window and not let so much light escape the scrubber,and maybe have a better reflector. i have seen the cfl outdoor flood light that measures aprox. 10"x7" but cant find it for sale .