Firam ɗin ƙofar wuta na gilashin an yi shi da ƙarfe, tare da kyakkyawan bayyanar, kuma saman firam ɗin ƙofar wuta yana da madaidaicin madubi mai ƙarfi, wanda ya dace da bukatun abokan ciniki. Gilashin da ke hana wuta yana ɗaukar gilashin da ke hana wuta, wanda zai iya rage zafin da gilashin ke kawowa.