AIR FILTER COMPATIBLE WITH: BACKPACK BLOWER MODELS: PB 403 413 PB 500 603 PB 611 620 PB 650 755 SERIES 400 500 SERIES 600 700 105X67X35 ECHO - KIORITZ - HOKKAIDO Code:010637 Original code:5510.5124.22 - A2226000031