{"product_id":"rmc5-genuine-deflecto-roof-mushroom-cowl-aluminium-125mm","title":"RMC5 Genuine Deflecto Roof Mushroom Cowl 125mm Aluminium, Roof Vent Outlet for Rangehood and Exhaust Fan Ducting","description":"\u003cp\u003eThe Deflecto RMC5 is an aluminium mushroom cowl that caps a 125mm duct where it exits through the roof. It's the finishing piece for rangehood and exhaust fan runs that vent straight up, letting air out while the domed top sheds rain. Aluminium doesn't rust, so it handles the weather well. Match it to 125mm ducting or a 125mm roof spigot.\u003c\/p\u003e\n\u003ch2\u003eWhy a roof cowl matters on an exhaust duct\u003c\/h2\u003e\n\u003cp\u003eVenting a rangehood into the roof space just moves grease and moisture into the ceiling, where it can feed mould and stain the plaster. Running the duct out through the roof and capping it with a cowl sends that air outside for good. The mushroom shape leaves a gap under the cap for air to escape while blocking direct rain. A damaged or missing cowl can let water run down the duct, cause drips at the rangehood, or let wind push back down and weaken extraction.\u003c\/p\u003e\n\u003ch2\u003ePart details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeflecto part RMC5\u003c\/li\u003e\n\u003cli\u003eMushroom style roof cowl\u003c\/li\u003e\n\u003cli\u003eAluminium construction\u003c\/li\u003e\n\u003cli\u003eSuits 125mm ducting\u003c\/li\u003e\n\u003cli\u003eFor rangehood and exhaust fan roof outlets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"part-specs\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eDuct size\u003c\/th\u003e\n\u003ctd\u003e125mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch2\u003eInstalling a roof cowl\u003c\/h2\u003e\n\u003cp\u003eRoof work calls for the right ladder, harness and experience, so use a qualified tradesperson if you're not set up for working at heights. The cowl needs to be paired with a weatherproof flashing that suits your roof type, so check what you need before starting. Isolate power to the rangehood or fan, connect the duct securely below the roof and seal every joint so water can't track inside.\u003c\/p\u003e\n\u003ch2\u003eQuestions about this part\u003c\/h2\u003e\n\u003ch3\u003eDoes this cowl suit a 150mm duct?\u003c\/h3\u003e\u003cp\u003eNo, the RMC5 is sized for 125mm ducting. If your rangehood or fan runs 150mm duct, you'll need a cowl made for that size, or a reducer, though reducing the duct can cut airflow. Check your rangehood manual for the recommended duct size.\u003c\/p\u003e","brand":"Deflecto","offers":[{"title":"Default Title","offer_id":44551051608142,"sku":"RMC5","price":54.81,"currency_code":"AUD","in_stock":true}],"url":"https:\/\/partsshop.com.au\/products\/rmc5-genuine-deflecto-roof-mushroom-cowl-aluminium-125mm","provider":"My Store","version":"1.0","type":"link"}