Using your new black rectangular glass accent mirror is a breeze. Since it comes with a pre - attached D - ring on the back, you can easily hang it on your wall either vertically or horizontally according to your preference and the layout of your room. You don't need to worry about any assembly, so you can start decorating right away. When cleaning the mirror, use a soft, lint - free cloth and a mild glass cleaner. Avoid using abrasive materials that could scratch the glass. This mirror is not subject to Prop65 regulations, which means you can enjoy it without those concerns. Make sure to measure your space beforehand to ensure the 37.4 - inch H x 29.5 - inch W x 1.4 - inch D mirror fits perfectly. Enjoy the elegance and style it brings to your space!