The glass combo is approx. 12.5 cm long and has a head height of approx. 3 cm.
Activated carbon filters are inserted from the front, not directly from the mouthpiece side.
Filters with 5.9 and 6 mm Ø fit. such as Purize Xtra Slim, Acti Tube Extra Slim, OCB ACTIV' Tips Extra, Gizeh Active, Hybrid Supreme, Kailar and Medusa Filter, and many more.