Irwin 226800 Wooden Handscrew Clamp, 4-1/2" Summer10 Adjust the length of the

Adjust the length of the strap so that when you stand up

with removable protective liner

and designed for maximum efficiency

An attic insulation shield (AIS) is a required part of the installation even if you have no insulation in the area where your chimney passes through the attic

Four-wire system

Irwin 226800 Wooden Handscrew Clamp, 4-1/2" Summer10 Adjust the length of theHighlights: Jaw Length: 8" Jaw Opening: 4 1 2" Jorgensen style "J"; with adjustable steel spindle Finest straight grain hard maple jaws; properly seasoned and oiled Cold drawn steel screws and nuts Angle between jaw adjusts to fit work; can also adjust to overlap each other Holds odd shapes easily Hard maple handles protected by heavy steel ferrules; will not come loose Easy operation not affected by humidity