Length: 250 mm features: Cross bar support Lengths can be cut to size Minimum of two crossbars required per grille Maximum spacing of crossbars in floor grilles is 250 mm Extra crossbars can be added to increase strength Quantity of clip-on profiles, determined by length of crossbar Length of crossbar - 70 85 100 115 130 145 160 mm No. of clip-on profiles 4---5---6----7----8----9----10 Length of crossbar - 175 190 205 220 235 250 mm No. of clip-on profiles 11--12--13---14---15--16 Aluminium