Fits 23' to 55' TV Screens: Compatible with VESA 75x75mm to 400x400mm mounting holes. Elevate your 23' to 55' TV screen to a position that reduces strain on your neck, back, and eyes for a comfortable viewing experience Fluid Motion: Features -15° to +5° tilt, 180° swivel, and 6° rotation to find that perfect viewing angle for the whole group to enjoy. A powerful pneumatic spring arm also provides 10' of height adjustment for maximum flexibility