What It Is

• A two-part modular filter basket

• Designed to replace the top filter basket

• Includes:

  • Coarse filter foam (upper section)

  • Fine filter foam (removable lower section)

• Ready to install — no extra media required

The “e4/7/901-2” reference simply indicates compatibility with multiple CristalProfi e models.

How It Improves Filtration

✔ ~100% larger pre-filter surface area
✔ Catches coarse debris before it reaches biological media
✔ Reduces clogging in lower baskets
✔ Extends service intervals
✔ Easier maintenance (remove only the fine prefilter section for cleaning)

In short: cleaner water, better flow stability, and less frequent full filter cleaning.

Compatibility

Designed for these models:

• JBL CristalProfi e401

• JBL CristalProfi e701

• JBL CristalProfi e901

• JBL CristalProfi e1501

• JBL CristalProfi e1901

It effectively upgrades these to the improved:

• e402

• e702

• e902

• e1502

• e1902