{"product_id":"330mm-brass-trim-ring-for-bulkhead-fittings-polycarbonate","title":"330mm Brass Trim Ring for Bulkhead Fittings - Polycarbonate","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Knightsbridge 330mm brass trim ring is a polycarbonate accessory designed to fit over compatible circular bulkhead fittings, adding a brass-finish outer rim with a 60° angled projection. The ring clips or screws onto the bulkhead housing, extending the visible diameter from the fitting's base to 330mm and creating a finished edge that hides rough masonry or plaster cuts around the mounting point.\u003c\/p\u003e\n\u003cp\u003eDesigned for both indoor and outdoor bulkhead installations where a brass accent is needed, the trim ring suits entrance porches, garden walls, commercial facades, and period property restorations where a metallic finish complements brickwork or render. The polycarbonate construction resists UV degradation, impact and corrosion better than thin stamped metal alternatives, maintaining the brass finish appearance through weather exposure without tarnishing or rusting.\u003c\/p\u003e\n\u003cp\u003eThe 60° projection angle means the ring slopes outward from the bulkhead face, shedding rainwater away from the fitting and reducing water pooling on the horizontal surface. This projection also creates a small visual shadow line that separates the fitting from the wall plane. The 330mm outer diameter suits standard 200-280mm diameter bulkhead bodies, with the exact compatibility depending on the specific bulkhead model — check the bulkhead's mounting flange diameter before ordering.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e330mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProjection\u003c\/td\u003e\n\u003ctd\u003e60°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003ePolycarbonate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003eDownloads\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/datasheet-TPB33BRRG.pdf\" target=\"_blank\"\u003eProduct Specification Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eWhich bulkhead fittings does this fit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 330mm trim ring is designed for Knightsbridge circular bulkhead fittings with mounting flanges up to approximately 280mm diameter. Check the specification sheet or the bulkhead's product page to confirm compatibility before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the brass finish real metal?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The trim ring is moulded polycarbonate with a brass-effect metallic finish applied. This gives the appearance of brass without the weight, cost or corrosion issues of solid brass, while maintaining UV and impact resistance for outdoor use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used outdoors?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The polycarbonate construction is UV-stabilised and weather-resistant. The 60° projection angle helps shed rainwater away from the bulkhead face, reducing moisture pooling on the horizontal surface.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is it fitted?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe trim ring typically clips or screws onto the outer edge of the bulkhead housing after the bulkhead itself is mounted to the wall. Exact fitting method depends on the specific bulkhead model — refer to the bulkhead's installation instructions.\u003c\/p\u003e","brand":"Knightsbridge","offers":[{"title":"Default Title","offer_id":52475339145483,"sku":"TPB33BRRG","price":4.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/8465_ba8be723-239e-4fea-95f2-f4a43897643b.jpg?v=1760643040","url":"https:\/\/niori.co.uk\/products\/330mm-brass-trim-ring-for-bulkhead-fittings-polycarbonate","provider":"Niori","version":"1.0","type":"link"}