Screw Products HDB104-5 Star Drive Heavy Duty Exterior Screw, 10" x 4" Rubber Flex Fittings Outside Diameter : 3/8"

Outside Diameter : 3/8"

Thickness : 4 Mil

Step-down diffuser rings deflect air stream 360°

matte black steel outer casing

The Vornado AVH2 full room heater was featured on treehugger

Screw Products HDB104-5 Star Drive Heavy Duty Exterior Screw, 10" x 4" Rubber Flex Fittings Outside Diameter : 3/8"Highlights: Size: 10" x 4" Star drive offers twice the torque over phillips or square drive screws True flat head with self countersinking nibs and drag reducing knurled shoulder Type 17 notched extra sharp point reduces the need for pre drilling Tiny cuts on the threads reduces the torque needed to drive the fastener Bronze star exterior coating compatible with pressure treated lumber and can be used with tannic wood such as cedar and redwood