Project Source Replacement Vertical Vanes are the way to go if they need to be replaced, but nothing is wrong with the headrail. Sold individually, so you can replace only what is needed. Available in several lengths and are trimmable for a perfect fit.
60-in long Replacement Vanes for Vertical Blinds
Each vane is 3.5-in W x 60-in long
Room-darkening louvers that block up to 85% of light when fully closed
Louvers can be easily trimmed to desired length for a perfect fit
Constructed of vinyl material making them durable and moisture resistant
Easy to clean using a feather duster or a soft brush attachment on a vacuum
Vertical blinds are ideal for larger windows, floor-to-ceiling windows and sliding patio doors
Vertical Blind Headrails are sold separately
1-year limited warranty