THIS IS ONLY A SHADE COVER FOR YOUR EXISTING PERGOLA OR STRUCTURE WITH INCLUDED STEEL RODS. NO PERGOLA FRAME OR STRUCTURE IS INCLUDED. THE SIZES LISTED ARE THE EXACT SIZE OF THE COVER, NOT THE SIZE OF YOUR PERGOLA/STRUCTURE. IF YOU HAVE A 10X10 PERGOLA AND YOU WANT THE COVER TO HANG DOWN 3FT ON EACH SIDE, YOU NEED AT LEAST A 10X16 (10 X 10+3+3). PLEASE MEASURE YOUR PERGOLA BEFORE ORDERING SO WE GET IT RIGHT THE FIRST TIME. IF YOU HAVE ANY QUESTIONS PLEASE SEND A MESSAGE. THE WIDTH IS MOST IMPORTANT TO MEASURE AND YOU’LL ALMOST ALWAYS WANT A LITTLE BIT LONGER THAN YOU THINK YOU NEED. Waterproof means most water will not pass through the cover. It should not be used to keep anything 100% dry. Water can collect on top after it rains but can be pushed off with a broom handle. Its best to remove the cover during rainy season when you might not use it as much. This cover will not fit every pergola frame. It has straight edges and is the size listed. The only way to get the correct size for your project is to measure before ordering. Finished with double-stitched reinforced edges and 2 inch diameter rod pockets on the edges. Connectable weighted rods with eyeloops on each end are included. Our rods are easy to put together and don’t rust. The rod pockets are are on the second side listed, or the shorter sides. On a 16′ x 8′, the rod pockets are on the 8ft sides. A 16×8 is 8ft wide and 16ft long. By inserting weighted rods in the rod pockets and securing to the pergola, the cover will remain stable in windy conditions. Can reduce temperatures underneath by up to 25% while blocking 90% of UV rays and protecting your skin. If you have any questions, please ask… We are here to help. 1 Pergola Cover (No pergola frame or structure included). 2 Weighted metal rods. Paracord Rope (Free Gift). We are a small company that works hard to be honest and keep our valued customers happy and coming back. We can usually resolve any issues or mistakes quickly and leave you smiling.