Murfin bangon bango na PVC na waje / Ƙofar Window shine maye gurbin siminti, layin plaster, da murfin taga marmara, ana amfani dashi azaman murfin taga kusa don allon rataye.Idan an ƙawata murfin taga da wasu kayan, da fatan za a yi watsi da wannan kayan haɗi kuma yi amfani da tsiri mai siffar J don rufe gefen.