Aqua Medic overflow comb with holder, for the construction of aquarium overflows. The water runs evenly through the comb. Plant debris and dirt are trapped, fish remain in the aquarium. The retainer for overflow comb is glued on to the overflow. The comb is inserted in the retainer and can easily be removed for cleaning. It can also be used with a flexible holder (combfix).Aqua Medic Overflow Comb with Holder 32 mmlength: app. 32 cmheight incl. retainer: app. 6 cmlength of teeth: app. 2.2 cmAqua Medic Overflow Comb with Holder 50 mmsuitable for glass thickness 6 - 8 mmlength: app. 50 cmheight incl. retainer: app. 8 cmheight excl. retainer: app. 5.5 cmlength of teeth: app. 3.7 cmthe overflow comb can also be attached directly to the glass pane with the attached clips without using the retainer