1. Ko te tinana pouaka he mea hanga ki te pereti maitai makariri, me te maimoatanga rehu hiko i runga i te mata o waho me te pereti diffuser.
2. Hangaia kiato, mahi hiri pono, ko te kokoru hau he kokoru taha me te kokoru o runga, he tapawha me te porowhita te waha o te flange.
3. I etahi wa ka whakawhäitihia te rūma ma e te teitei o te hanga tangata, me whakamahi ranei i te hoahoa kiato, ka taea te kowhiri i te tauranga whakahiato hau tātari.
4. He paparanga whakamatao, he kowiri tira hei whiriwhiri.