kvv, kvvp, kvvrp, kvvp2, kvv23, kvv32
Mkuwa wapakati wa PVC wotsekedwa ndi zingwe zoluka zotetezedwa zimayikidwa m'nyumba. Ngalande za zingwe, mapaipi ndi zina zomwe zimafunikira zotetezedwa zimakhala zoyenera kumadera omwe amasokonezedwa ndi ma siginolo.
Mitundu yomwe amagwiritsidwa ntchito kawirikawiri: kvv, kvvp, kvvrp, kvvp2, kvv23, kvv32
