Gardenwinds.com
Try searching the internet for the brand name and model number. You could also try contacting Costco and see if they can help you. Better yet, contact swingcushioncovers.com. They make the replacement canopies and cushion covers for all makes of outdoor patio swings using Sunbrella fabric, so it won't fall apart after a few years. They specialize in the Costco patio swing.
The canopy is probably unique to the brand of patio swing that you purchased. Check out the website for the brand. Otherwise, you may be able to use the old one as a pattern and make a new one from that.
To purchase replacement connectors for the canopy on a patio swing you can first contact the company who manufactured the swing. Secondly you can return to the store it was purchased and look for replacement connectors.
You can buy a replacement canopy for your patio umbrella online. It will cost you about $40 and includes everything you need to put up the canopy with success.
Ebay or Amazon
Check the manufacturer's web site. Lacking that in your question, this is the best information that can be given.
yes theirs an wbsie you go to www.walmart.com and type in what you are looking for. For replacement patio swing canopy and cushion covers go to www.swingcushioncovers.com
Check your big box home improvement centers and patio furniture stores.
There is currently a four-piece patio set available at Target. It comes complete with an umbrella and a table. The going price right now is $199, as there is a sale.
There is a website that makes replacement swing cushions and canopies for patio swings sold at Costco, Wal-Mart, Target, Lowes, Sears, Home Depot, Wal-Mart, and other retailers. See links. They're made with Sunbrella fabric so they will last for many many years (Sunbrella awning fabric comes with a 10 year warranty). They have a good selection of fabrics. They seem to have a very large selection and cover just about every model.
http://www.servicesupportlink.com/umbrella-parts.html
I justs cut the cushions off the mesh and use the mesh alone. It looks fine and works well. The cushion had gotten moldy and ripped. So anyone who needs a replacement sling or cushion for any Costco patio swing model should visit swingcushioncovers.com. They make their products in California and will sew a replacement canopy, cushion, sling for any make or model.