↗防火通风格栅Lorient LVC40 Intumescent Air Transfer Grille High Performance Circular Vision Style ATG · 膨胀型防火通风格栅
↗防火通风格栅Lorient LVN20 Intumescent Air Transfer Grille High Performance Non-Vision Style ATG · 膨胀型防火通风格栅
↗防火通风格栅Lorient LVN25 Intumescent Air Transfer Grille High Performance Non-Vision Style ATG · 膨胀型防火通风格栅
↗防火通风格栅Lorient LVV40S Intumescent Air Transfer Grille FIRE + SMOKE resistant - wall mounted · 防火防烟通风格栅