Check the listing for details. Anti Blue Light Screen Protector (3 Pack) for 23 Inches (Screen Measured. Condition: New. Listed at 45.09 USD. Anti Blue Light Screen Protector (3 Pack) for 23 Inches (Screen Measured PRODUCT DETAILS: This High Quality Anti Blue Light Screen Protector removes the blue light from the screen and helps relieve computer eye strain to help you sleep better. Easy to apply and removable. Protects screen against scratches. Features: Filter out Blue Light and relieve computer eye strain to help you sleep better Actual Screen Protector dimensions are 23 inches measured diagonally. 20 inches width x 11.3 inches high. Please compare your monitor to our measurement picture before purchasing blue light blockage (380nm-490nm) Easy to apply and remove. This package includes 3 screen protectors and an installation kit. Protects screen against scratches PAYMENT SHIPPING RETURNS We only accept payment through PayPal. This is to ensure that all of our buyers qualify for eBay Buyer Protection. Most orders are shipped within 1-2 business days with standard shipping and tracking. A tracking number will be posted as soon as the item has shipped. Please make sure to provide the correct shipping address during checkout as the address cannot be changed afterwards. We are not responsible for any incorrect or undeliverable addresses. We do not ship to PO/APO Boxes. We offer easy returns on most items within 30 days of delivery for a full refund.