{"product_id":"circular-sound-attenuator-silencer-1","title":"Iris Damper","description":"\u003cp data-start=\"127\" data-end=\"607\"\u003eAn \u003cstrong data-start=\"149\" data-end=\"164\"\u003eIris Damper\u003c\/strong\u003e is a type of adjustable airflow control device used in HVAC duct systems to regulate the volume of air passing through circular ducts. Its unique design allows precise throttling of airflow by rotating multiple radial blades, similar to a camera iris, making it ideal for balancing air in commercial, industrial, and laboratory ventilation systems. Iris dampers are compact, easy to install, and provide smooth, stepless control of airflow.\u003c\/p\u003e\n\u003cp data-start=\"609\" data-end=\"624\"\u003e\u003cstrong data-start=\"609\" data-end=\"622\"\u003eMaterial:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"625\" data-end=\"973\"\u003e\n\u003cli data-section-id=\"1g19ys\" data-start=\"625\" data-end=\"716\"\u003e\n\u003cp data-start=\"627\" data-end=\"716\"\u003e\u003cstrong data-start=\"627\" data-end=\"638\"\u003eCasing:\u003c\/strong\u003e Galvanised steel or stainless steel for durability and corrosion resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"121rst4\" data-start=\"717\" data-end=\"797\"\u003e\n\u003cp data-start=\"719\" data-end=\"797\"\u003e\u003cstrong data-start=\"719\" data-end=\"730\"\u003eBlades:\u003c\/strong\u003e Aluminium or steel, sometimes with rubber or silicone edge seals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1qjkz89\" data-start=\"798\" data-end=\"881\"\u003e\n\u003cp data-start=\"800\" data-end=\"881\"\u003e\u003cstrong data-start=\"800\" data-end=\"821\"\u003eShaft \u0026amp; Bearings:\u003c\/strong\u003e Stainless steel or zinc-plated steel for smooth operation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"wt0h33\" data-start=\"882\" data-end=\"973\"\u003e\n\u003cp data-start=\"884\" data-end=\"973\"\u003e\u003cstrong data-start=\"884\" data-end=\"898\"\u003eActuation:\u003c\/strong\u003e Manual handwheel, lever, or compatible with electric\/pneumatic actuators\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"975\" data-end=\"996\"\u003e\u003cstrong data-start=\"975\" data-end=\"994\"\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"997\" data-end=\"1378\"\u003e\n\u003cli data-section-id=\"cde78j\" data-start=\"997\" data-end=\"1035\"\u003e\n\u003cp data-start=\"999\" data-end=\"1035\"\u003eSuitable for circular duct systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"h083fg\" data-start=\"1036\" data-end=\"1093\"\u003e\n\u003cp data-start=\"1038\" data-end=\"1093\"\u003eStepless airflow control using radial blade mechanism\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1tpe8wn\" data-start=\"1094\" data-end=\"1150\"\u003e\n\u003cp data-start=\"1096\" data-end=\"1150\"\u003ePressure rating: Low to medium pressure duct systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"18cqm4q\" data-start=\"1151\" data-end=\"1193\"\u003e\n\u003cp data-start=\"1153\" data-end=\"1193\"\u003eAvailable in a wide range of diameters\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"c6z0dd\" data-start=\"1194\" data-end=\"1250\"\u003e\n\u003cp data-start=\"1196\" data-end=\"1250\"\u003eCan be operated manually or with motorised actuation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1julh5p\" data-start=\"1251\" data-end=\"1296\"\u003e\n\u003cp data-start=\"1253\" data-end=\"1296\"\u003eDurable construction with minimal leakage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"gfedeh\" data-start=\"1297\" data-end=\"1378\"\u003e\n\u003cp data-start=\"1299\" data-end=\"1378\"\u003eOptional features: position indicators, locking handles, or actuator mounting\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Direct Duct Supplies","offers":[{"title":"100mm","offer_id":57219751215429,"sku":null,"price":68.99,"currency_code":"GBP","in_stock":true},{"title":"125mm","offer_id":57219751248197,"sku":null,"price":68.99,"currency_code":"GBP","in_stock":true},{"title":"150mm","offer_id":57219751280965,"sku":null,"price":78.99,"currency_code":"GBP","in_stock":true},{"title":"160mm","offer_id":57219751313733,"sku":null,"price":78.99,"currency_code":"GBP","in_stock":true},{"title":"200mm","offer_id":57219751346501,"sku":null,"price":84.99,"currency_code":"GBP","in_stock":true},{"title":"250mm","offer_id":57219751379269,"sku":null,"price":158.99,"currency_code":"GBP","in_stock":true},{"title":"300mm","offer_id":57219751412037,"sku":null,"price":178.99,"currency_code":"GBP","in_stock":true},{"title":"315mm","offer_id":57219751444805,"sku":null,"price":178.99,"currency_code":"GBP","in_stock":true},{"title":"400mm","offer_id":57219751477573,"sku":null,"price":398.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1037\/5168\/0325\/files\/Iris-dampers-GBL_png.webp?v=1771760333","url":"https:\/\/directductsupplies.com\/products\/circular-sound-attenuator-silencer-1","provider":"Direct Duct Supplies","version":"1.0","type":"link"}