![Amazon.com: 26 Replacement Parts for iRobot Roomba i7 i7+ i3 i3+ i4 i4+ i6 i6+ i8 i8+ j7 j7+/Plus E5 E6 E7 Robot Vacuum Accessories, 2 Multi-Surface Rubber Roller Brushes 8 Filters Amazon.com: 26 Replacement Parts for iRobot Roomba i7 i7+ i3 i3+ i4 i4+ i6 i6+ i8 i8+ j7 j7+/Plus E5 E6 E7 Robot Vacuum Accessories, 2 Multi-Surface Rubber Roller Brushes 8 Filters](https://m.media-amazon.com/images/I/71t+aDNB20L._AC_UF350,350_QL80_.jpg)
Amazon.com: 26 Replacement Parts for iRobot Roomba i7 i7+ i3 i3+ i4 i4+ i6 i6+ i8 i8+ j7 j7+/Plus E5 E6 E7 Robot Vacuum Accessories, 2 Multi-Surface Rubber Roller Brushes 8 Filters
![Costco shows an i4 robot to compare with the i7+ on its site. The link to the actual listing for the i4 does not work though. It appears that the i4 somehow Costco shows an i4 robot to compare with the i7+ on its site. The link to the actual listing for the i4 does not work though. It appears that the i4 somehow](https://preview.redd.it/01ycax3n5ym51.jpg?width=640&crop=smart&auto=webp&s=10ac809dc0e90e09399261d3585e51dc21c1db3f)
Costco shows an i4 robot to compare with the i7+ on its site. The link to the actual listing for the i4 does not work though. It appears that the i4 somehow
![John Ackerman IRobot Roomba How It Works Comparison Chart 531 555 564 581 PC SHOW 2011 Price List Brochure Flyer Image John Ackerman IRobot Roomba How It Works Comparison Chart 531 555 564 581 PC SHOW 2011 Price List Brochure Flyer Image](http://cdn.itfairsg.com/pcshow2011/images/John%20Ackerman%20iRobot%20Roomba%20How%20It%20Works%20Comparison%20Chart%20531%20555%20564%20581.jpg)