For existing holding devices, enables other fastening variants:
(A) Holding device extension
Extension of the perforated rail by 20 cm (7.87 in.).
(B) Glass top attachment
Used to attach the perforated rail below glass tops with a width of 4 to 15 cm (1.57 to 5.9 in.) .
(C) Glue-in attachment
The clamp holding device is not required for this type of attachment. Instead, two threaded plates have to be adhered to the aquarium pane with silicone adhesive 104.72, and two screws are used for attachment.