Xa kuthelekiswa neepaneli zemveli, iipaneli ezinemingxuma zibonelela ngezi nzuzo zilandelayo:
Ukuphefumla okulungileyo: I-perforations kwiipaneli zivumela ukujikeleza komoya wamahhala, ngaloo ndlela kunciphisa ukushisa kwangaphakathi kunye nomswakama kunye nokuphucula induduzo.
Ukugquma kwesandi esilungileyo: Imibhobho kwiipaneli inokufunxa kwaye ibonakalise isandi, ngaloo ndlela inciphisa amanqanaba engxolo.
Ukuhanjiswa kokukhanya okulungileyo: I-perforations ivumela ukukhanya ukuba kudlule, kwandisa ukukhanya kwendalo ngaphakathi.
Ukumelana nomlilo okulungileyo: I-perforations ivumela ukujikeleza komoya, ukunciphisa umngcipheko womlilo kunye nokuphucula ukhuseleko lwesakhiwo.
Ikhaphukhaphu: Iiphaneli ezigxunyekiweyo zikhaphukhaphu, nto leyo eyenza kube lula ukuthuthwa nokuzifaka.
