supply of sight screen (20x15 feet)-size: 20 ft. wide x 14 ft. height rotating type made out of all-weather poof and uv protected special material with aluminum and plastic sandwich panel planks one side white and other side black surface fabricated on double m.s. square tube frame, having heavy duty polyurethane four wheels and two wheels in centre for easy mobility centrally pivoted heavy dut.y single bearing for rotating screen should be easily rotated by one person without any force specially designed air passing ventilations provide between the sheets.
