R Square Engineers offers Carbon Steel Made Guillotine Dampers. R Square Engineers is an ISO 9001:2000 accredited company. The company also manufactures various types of industrial valves. The Carbon Steel Made Guillotine Dampers are normally used for isolation service in round or rectangular ducts. The Carbon Steel Made Guillotine Dampers have low leak or zero leak configuration. These Guillotine Dampers are also made of stainless steel. These Guillotine Dampers have stainless steel spring shims to obtain leakage less then 1% at blade edge.