I purchased a TOJA Grid Double Pergola Kit (8'X16') with 2 SHADE SAILS for 4x4 Wood Posts. The grid brackets and hardware arrived in several boxes that were quite manageable. I HIGHLY recommend you purchase your timber 2 or 3 weeks in advance to allow adequate drying. I was using pressure treated timber; extremely wet, heavy and oversized for brackets. I set up an area of my garage and, using 1X2's, placed timbers so each piece was level and had space on all sides for ventilation. The weather was cool so I added a fan directed over one end of stack to remove resulting moisture and kept garage door open a few inches on bottom for full 24hr X 14 day drying period. After the drying period, I checked all timber lengths were as desired AND square. Then I sanded all four sides of each timber, first with 80 grit then 180 grit on orbital sander. I also rounded over each corner with sander. This improved the appearance of timbers 800% and ensured the brackets fit nicely. Note: PT wood is bad stuff; wear a good respirator when sanding. We plan on using a semi-transparent coloured stain on timber, later in summer, once they are fully dried out (if it ever stops raining here). The set up process went well but, I have to say, the claim of 45 minute assembly time is not realistic; expect a good 3-4 hours even with help. Also, have a good impact driver fitted with proper screw bit, good heavy duty step ladder or ladders available for optimum efficiency and safety. One note: don't install all the screws at first, one or two is sufficient to get things erected. Once everything is up, recheck all the dimensions to make sure it all makes sense, you may find one or two timbers are not fully seated into brackets. Just take out the two screws, beat the hell out of it in the direction you want and re-install screws. Guess how I know this! Oh yeah, don't beat on the brackets directly, use a small sledge and a scrap 2X4 (who doesn't have a small sledge and scrap 2X4). One other thing, inspect the brackets after all the screws are installed and everything is square. You may have scratched some brackets paint during assembly. You need to repaint any scuffs and scratches or risk rust showing up later. The bracket surfaces are really nice out of the box but not very durable during construction, in my experience. A few comments on the grid component design. There are way too many holes drilled into the grid brackets, in my view. The unused holes detract from final appearance. Use a black Sharpie to colour wood in unused holes to reduce this blemish. Better still, paint timber ends black before assembly. One comment on your final design. My pergola was an 8X8 double layout. I automatically made my legs 8 feet as well. This made everything look too tall and too square. Imagine building a house that was built like a cube ... doesn't fit the eye. Your pergola, regardless of size and whether it is a single, double or triple design, will look ODD if the legs are too high. You need the "walls" or vertical apertures of your structure to be more rectangular ... I ended up removing and cutting my legs down to 88", this gave a pleasing relationship to upper run of pergola and left lots of headroom for tall guests and the eventual "twinkle" light installs. The shade sail install was straight forward. However, instructions say to install sails before elevating with legs ... DON"T DO IT! It's hard enough managing these heavy timber elements without trying to avoid damaging the sails. It's very easy to install sails afterwards. One note: the sail tension straps will "dangle" afterwards and look unfinished. Once your happy with the tension, get some black "zip-ties" and secure the flying tails up atop the sail so they are not evident. We really like our new pergola and the brackets, screws and hardware provide are top notch. This has opened up a completely new living area for me, my wife and, of course, the dog! Cheers