Fully assembled, elegant, lightweight, and patented design, Designed for LCD monitors, NOT SUITABLE FOR LAPTOPS | Manufactured of an optical grade acrylic Fresnel lens, increasing character size by more than double | Adjustable magnification minimizes distortion by adjusting magnifier to be slightly closer or farther from the display | Product measures 23-1/2 inch wide x 14-1/4 inch high x 7 inch deep, covering a visual area of 21-7/8 inch wide x 13-3/4 inch high. Please make sure to select the correct size filter for your monitor | Designed for general office use in a normal ambient light environment. Note: Any intense lighting in the perimeter of the work area will be reflected within the Fresnel grooves and cause a distracting visual | Light tint for contrast enhancement thereby increasing readability. Note: Tint may further restrict visibility | Note: If the monitor used has poor resolution, product will magnify the poor resolution | Please note: For proper functionality, please follow enclosed installation instructions. (Installation Manual available in Technical Specifications below)