purpose

Applied to the through wall ducts of ventilation and air conditioning systems with fire prevention requirements, to prevent the spread of fire along the air ducts.

function

Normally open, the fuse operates at 70 ℃/150 ℃, and the valve automatically closes under the force of blade gravity or spring force.

texture of material

Galvanized sheet or A3 cold sheet

Stainless steel (used for clean air conditioning and kitchen exhaust systems).