Skip to main content

The intermediate ring enables the extension tube to be securely mounted in combination with a steel or plastic cover. The ring provides a firm hold and secure connection between the filter housing and extension pipe.

Suitable for the WFF 300 vortex fine filter or the WISY rainwater storage tank

0 of 0 reviews

Average rating of 0 out of 5 stars

Leave a review!

Share your experiences with other customers.


The payment is uncomplicated in our store! You can find detailed info about payment and shipping here. We offer the following payment methods:

Pay online PayPal BLIK iDEAL Multibanco OXXO Trustly Prepayment

Worldwide shipping

FREE SHIPPING WITHIN GERMANY FOR ORDERS OVER €50.

Once your order has been placed, you will receive a confirmation email informing you that our shipping team has received your order. Once your order has been processed, you will receive an email notification with your tracking information. Shipping costs will not be refunded in the event of a return. We ship with:

Parcel shipping Pallet delivery Delivery by forwarding agent Delivery by WISY AG

Intermediate ring

The intermediate ring for is required if an extension pipe is to be installed. In order to adjust the inspection opening to ground level. Made of stainless steel, resp. plastic, matching the material of the cover, suitable for the Vortex Filter WFF300, rainwater storage tank or infiltration system.

WFF 300 Plastic lid

Suitable for

Vortex fine filter WFF 300 with steel cover Vortex fine filter WFF 300 with steel cover
WFF 300 steel lid
Housing cover vortex fine filter WFF 300
Variants from €296.31*
€522.41*
Rainwater storage tank 5500l, WISY_Zoom Rainwater storage tank, WISY production

Article number

Intermediate ring for WFF 300 / rainwater storage tank / infiltration system RS 1060