Bussmann 20A FRN-R Cartridge Heavy-Duty Time Delay Cartridge Fuse (2-Pack) Decora Nominal Copper (7/8 OD Female

Nominal Copper (7/8 OD Female Copper Sweat) x 12 In

UL listed for 3 hour fire door

Turning either knob will retract bolt at all times to open door

Do it boxed

polished and unpolished natural stone such as granite

Bussmann 20A FRN-R Cartridge Heavy-Duty Time Delay Cartridge Fuse (2-Pack) Decora Nominal Copper (7/8 OD FemaleHeavy duty time delay FRN R easyID cartridge fuse makes it easy to locate the open fuse when the power goes out. The separate overload and short circuit elements of the Fusetron fuse allow harmless, temporary overloads to pass while reacting quickly to short circuit current levels. UL (Underwriter's Laboratories) listed Class RK5, ferrule ends. 250V.