Square Plate Satin Chrome. The ASTRA 3003 Door Closer provides integrated door control which is completely concealed when the door is closed, with a maximum opening angle of 105°. It is suitable for use on both left hand and right hand swing doors with a door width of 850mm - 1100mm. It features adjustable latching action plus adjustable closing speed whilst installed and is virtually maintenance free (other than routine cleaning). The closer has been continuously tested to 500,000 cycles, tested to BS EN 1154 and fire tested to BS EN 1634-1:2000.. Completely concealed when door is closed. Self handing. Adjustable latching action and closing speed. Continuously tested to 500,000 cycles