Sani-Slope™ Aluminum Sloped Floor Mounting System Patented T-flange shall be made of solid extruded 6061-T6 aluminum. T-flange shall be 2-1/2” wide at its base and shall extend upward to a height of at least 3”. Patented isolation panel bottom rail extrusion shall be made of solid 6061-T6 extruded aluminum and shall be dimensioned to fit over the T-flange so that the isolation panel can be leveled and secured. close window