Ibhodi ye-osb inokwahlulwa ibe ngamabanga amane: osb1, osb2, osb3, kunye ne-osb4.
I-osb1 yibhodi yenjongo ngokubanzi kunye nezixhobo zokuhombisa (kubandakanywa nefenitshala), ifanelekile kwiimeko ezomileyo zangaphakathi. Inokuthi ithathe indawo ye-MDF kunye ne-PB ngokupheleleyo ukwenza ifanitshala yangaphakathi ekumgangatho ophezulu, ngakumbi ifanelekile kwikhabhinethi yonke kunye neshishini le-closet.