Question about Official case for Raspberry Pi 3B+/3/2 - White - 122817

Don't understand what is meant by "Raspberry Pi 3 Type B, Enclosure, Red/White, Compatible with: Raspberry Pi, Accessory Type: Enclosure, Official Enclosures for the Raspberry Pi 3.u recommend with Raspberry B+/2 Not z.". Does this fit the Pi 3 B+ or not?