National Hardware N350-850 Adjustable Spring Hinge, Cold Rolled Steel, 4" Passage Provides the support package and

Provides the support package and termination parts for a chimney that is supported by a flat ceiling and that passes through an attic area and penetrates the roof

welded for strength

5 current-amps

Do not use petroleum based products or paint on flashing collar

Self-storing poly case with easy wind-up

National Hardware N350-850 Adjustable Spring Hinge, Cold Rolled Steel, 4" Passage Provides the support package andHighlights: Series: V521 Adjustable Suitable for use with standard hinge cutout and fire doors 37 lb load capacity 4" overall length Material: Cold Rolled Steel Finish: Oil Rubbed Bronze Standards: UL Listed 1 4" radius round corner