Letlapa le kentsoeng la Galvanized steel phenolic air duct ke sehlahisoa se secha sa phetoho ea letlapa la moea la setso.Lera le ka ntle la boto ea likotopo tsa moea le entsoe ka poleiti ea tšepe e kentsoeng ka masenke, karolo e ka hare e koahetsoe ka foil ea aluminium e thibelang ho bola, 'me bohareng bo entsoe ka foam ea phenolic.Ntle le melemo ea li-ducts tsa moea tse tloaelehileng tsa lakane ea tšepe tse tiileng le matla a phahameng, e boetse e na le matlotlo a ho boloka mocheso o thibelang lelakabe, ho monya molumo le ho fokotsa lerata.Ho feta moo, ka mor'a hore phala e thehoe, ha ho na ho boloka mocheso oa bobeli o hlokahalang, o hlōlang bofokoli ba mokhoa o tloaelehileng oa letlapa la moea hore lera le ka ntle la ho boloka mocheso le senyeha habonolo, le na le bophelo bo bolelele ba tšebeletso, 'me le le letle ebile le fana ka seatla se bulehileng.