Supply of Damper For Dg And Cmu Room 15 Supply Of Multi-Louver Dampers Size 2000 X 1000 Mm As Per Attached Drawing And Attached Technical Specification Sheet 1. Supply Of Double Acting Pneumatic Cylinder As Per Attached Technical Specification Sheet 2. Supply Of Spare Seal Kit. 1 Set Containing All The Required O Rings For Above Pneumatic Cylinder. Supply Of Retractable Spring For Above Actuator. Supply Of Manually Operataed Multi- Louver Damper Size 400X450 Mm As Per Attached Technical Specification Sheet 3.