Karcher Replacement Window Cleaning Blades for Window Vac, Large, 2-Pack. The Karcher Promise: Cleaner. Quicker. Best-in-class cleaning performance. Includes 2 11-Inch blades. Replacement standard squeegee blades for the Window Vacuum / Power Squeegee. 11 inches (280mm) wide. Compatible with Karcher Power Squeegee WV50, WV50PLUS, WV55, WV60, WV60PLUS and WV65PLUS Window Vacuums. Genuine Karcher accessory.