Yenziwe ngelaphu leOxford elikumgangatho otyebileyo elingangeni manzi kunye nemathiriyeli ye-PVC, ngomphetho welaphu elimnyama kunye neeseti ezi-4 zamaqhosha obhedu.Iyakwazi ukugotywa ngokulula, kunye nokuthunga kakuhle komphetho, ukuqina kunye nokusebenza (ihluke kwezinye iimveliso, inzima kwaye iqinile);Ukukhuselwa kwendalo, akukho vumba, ukukhanya okukhanyayo, kunokusetyenziswa ngokuphindaphindiweyo.