The Laguna PT1626 is the correct replacement filter pad for the following:
The Laguna PT1626 Replacement Water Filter Pad- 3-pack is a filter pad replacement for the Laguna PT1624 Air Pump Kit. The PT1624 filter pad helps capture debris in pond water to keep it fresh and clear. This Laguna filter pad arrives a convenient three pack.
Laguna PT1626 Replacement Water Filter Pad- 3-pack specifications: