Home Depot and Lowe's are two stores that sell parts for vertical blinds. Online sources of parts for vertical blinds include Fix My Blinds, BlindParts.com and Blinds USA Inc.
To help a consumer identify the problem with his vertical blinds, Fix My Blinds provides a troubleshooter in the form of an FAQ page with headings that address slat, headrail, chain and clip, mounting and child safety issues. Each answer provides suggestions for correcting the issue, and some offer a link to suggested parts necessary to fix the problem. This vendor also supplies a diagram of vertical blinds, which labels each part so that consumers know the names of the parts they need and can search for and purchase them from the selection on the website.
BlindParts.com also offers a diagram of vertical blinds parts. The labels of many of the parts include clickable links that lead the user to the product page from which he can purchase the part. Users can search for parts by manufacturer or conduct a general search on the website.
Blinds USA Inc. provides a clickable list of vertical blinds parts categories on its website. Clicking on one of these categories reveals a list of parts along with a photo and price.