Filayen da aka ƙare sau biyu wani akwati ne na gilashin da aka kera na musamman tare da rufaffiyar tashoshin jiragen ruwa guda biyu, galibi ana amfani da su don adanawa da rarraba samfuran ruwa. Ƙirar ƙarshen ƙarshen wannan kwalban yana ba shi damar ɗaukar samfurori daban-daban guda biyu a lokaci guda, ko raba samfuran zuwa sassa biyu don aikin dakin gwaje-gwaje da bincike.