{"product_id":"s-p-crhb-4-250-n-250mm-roof-mounted-fan","title":"S\u0026P CRHB\/4-250 N 250mm Roof-Mounted Fan","description":"\u003cp data-start=\"533\" data-end=\"1199\"\u003eThe \u003cstrong data-start=\"537\" data-end=\"581\"\u003eS\u0026amp;P CRHB\/4‑250 N 250 mm Roof‑Mounted Fan\u003c\/strong\u003e is a horizontal discharge centrifugal roof fan from Soler \u0026amp; Palau’s \u003cstrong data-start=\"650\" data-end=\"667\"\u003eCRHB‑N\/CRHT‑N\u003c\/strong\u003e series, ideal for commercial and industrial ventilation systems. It’s designed with a \u003cstrong data-start=\"754\" data-end=\"795\"\u003every low‑profile horizontal discharge\u003c\/strong\u003e, making it suitable for roof installations where height is restricted. The unit features a \u003cstrong data-start=\"887\" data-end=\"927\"\u003ebackward‑curved centrifugal impeller\u003c\/strong\u003e for efficient airflow and an \u003cstrong data-start=\"957\" data-end=\"984\"\u003eexternal rotor AC motor\u003c\/strong\u003e with thermal protection for reliable performance. Construction includes a galvanised steel base with a spun aluminium cowl and bird‑proof guard to withstand outdoor conditions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1201\" data-end=\"1204\"\u003e\n\u003ch2 data-section-id=\"mmsur\" data-start=\"1206\" data-end=\"1235\"\u003eMaterial \u0026amp; Build Quality\u003c\/h2\u003e\n\u003cul data-start=\"1236\" data-end=\"1849\"\u003e\n\u003cli data-section-id=\"1je5avq\" data-start=\"1236\" data-end=\"1349\"\u003e\n\u003cp data-start=\"1238\" data-end=\"1349\"\u003e\u003cstrong data-start=\"1238\" data-end=\"1247\"\u003eBase:\u003c\/strong\u003e Galvanised sheet steel for strength and corrosion resistance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1aaq1ur\" data-start=\"1350\" data-end=\"1445\"\u003e\n\u003cp data-start=\"1352\" data-end=\"1445\"\u003e\u003cstrong data-start=\"1352\" data-end=\"1361\"\u003eCowl:\u003c\/strong\u003e Spun aluminium weather hood for durability. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"192xbyd\" data-start=\"1446\" data-end=\"1584\"\u003e\n\u003cp data-start=\"1448\" data-end=\"1584\"\u003e\u003cstrong data-start=\"1448\" data-end=\"1461\"\u003eImpeller:\u003c\/strong\u003e High‑efficiency backward‑curved centrifugal impeller (plastic for 225\/250 models). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"s3lvnt\" data-start=\"1585\" data-end=\"1737\"\u003e\n\u003cp data-start=\"1587\" data-end=\"1737\"\u003e\u003cstrong data-start=\"1587\" data-end=\"1597\"\u003eMotor:\u003c\/strong\u003e Single‑phase external rotor AC motor with thermal overload protection, speed adjustable by voltage. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"15te25a\" data-start=\"1738\" data-end=\"1849\"\u003e\n\u003cp data-start=\"1740\" data-end=\"1849\"\u003e\u003cstrong data-start=\"1740\" data-end=\"1750\"\u003eGuard:\u003c\/strong\u003e Steel finger proof guard for safety and debris prevention. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1851\" data-end=\"1854\"\u003e\n\u003ch2 data-section-id=\"1a3ueyz\" data-start=\"1856\" data-end=\"1873\"\u003eSpecifications\u003c\/h2\u003e\n\u003cul data-start=\"1875\" data-end=\"2758\"\u003e\n\u003cli data-section-id=\"11nnsfk\" data-start=\"1875\" data-end=\"1941\"\u003e\n\u003cp data-start=\"1877\" data-end=\"1941\"\u003e\u003cstrong data-start=\"1877\" data-end=\"1894\"\u003eProduct Type:\u003c\/strong\u003e Centrifugal Roof Mounted Fan (CRHB‑N Series)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1mmutpx\" data-start=\"1942\" data-end=\"1969\"\u003e\n\u003cp data-start=\"1944\" data-end=\"1969\"\u003e\u003cstrong data-start=\"1944\" data-end=\"1954\"\u003eModel:\u003c\/strong\u003e CRHB\/4‑250 N\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"8jha04\" data-start=\"1970\" data-end=\"2002\"\u003e\n\u003cp data-start=\"1972\" data-end=\"2002\"\u003e\u003cstrong data-start=\"1972\" data-end=\"1989\"\u003eFan Diameter:\u003c\/strong\u003e \u003cstrong data-start=\"1990\" data-end=\"2000\"\u003e250 mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1j7ygfs\" data-start=\"2003\" data-end=\"2047\"\u003e\n\u003cp data-start=\"2005\" data-end=\"2047\"\u003e\u003cstrong data-start=\"2005\" data-end=\"2019\"\u003eDischarge:\u003c\/strong\u003e Horizontal roof discharge\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1hr2k9x\" data-start=\"2048\" data-end=\"2104\"\u003e\n\u003cp data-start=\"2050\" data-end=\"2104\"\u003e\u003cstrong data-start=\"2050\" data-end=\"2065\"\u003eMotor Type:\u003c\/strong\u003e Single‑phase external rotor AC motor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"12n0apm\" data-start=\"2105\" data-end=\"2142\"\u003e\n\u003cp data-start=\"2107\" data-end=\"2142\"\u003e\u003cstrong data-start=\"2107\" data-end=\"2119\"\u003eVoltage:\u003c\/strong\u003e \u003cstrong data-start=\"2120\" data-end=\"2140\"\u003e230 V \/ 50–60 Hz\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1y4ostj\" data-start=\"2143\" data-end=\"2240\"\u003e\n\u003cp data-start=\"2145\" data-end=\"2240\"\u003e\u003cstrong data-start=\"2145\" data-end=\"2167\"\u003eProtection Rating:\u003c\/strong\u003e \u003cstrong data-start=\"2168\" data-end=\"2176\"\u003eIP54\u003c\/strong\u003e, Insulation Class \u003cstrong data-start=\"2195\" data-end=\"2200\"\u003eF\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"w82wu4\" data-start=\"2241\" data-end=\"2352\"\u003e\n\u003cp data-start=\"2243\" data-end=\"2352\"\u003e\u003cstrong data-start=\"2243\" data-end=\"2260\"\u003eConstruction:\u003c\/strong\u003e Galvanised steel base with aluminium cowl and guard \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"fsxj03\" data-start=\"2353\" data-end=\"2480\"\u003e\n\u003cp data-start=\"2355\" data-end=\"2480\"\u003e\u003cstrong data-start=\"2355\" data-end=\"2374\"\u003eOperating Temp:\u003c\/strong\u003e Suitable for general ventilation applications (roof installation) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"3a7b8\" data-start=\"2481\" data-end=\"2581\"\u003e\n\u003cp data-start=\"2483\" data-end=\"2581\"\u003e\u003cstrong data-start=\"2483\" data-end=\"2501\"\u003eSpeed Control:\u003c\/strong\u003e Voltage speed control options available \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"19412f3\" data-start=\"2582\" data-end=\"2758\"\u003e\n\u003cp data-start=\"2584\" data-end=\"2758\"\u003e\u003cstrong data-start=\"2584\" data-end=\"2601\"\u003eApplications:\u003c\/strong\u003e Roof ventilation for commercial buildings, industrial premises, warehouses, workshops, and ducted extraction systems \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Direct Duct Supplies","offers":[{"title":"Default Title","offer_id":57353609445701,"sku":null,"price":535.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1037\/5168\/0325\/files\/S_PCRHB4-225N225mmRoof-MountedFan_8e812e74-b8c1-49ed-bc68-639b3aeb5a90.png?v=1773215155","url":"https:\/\/directductsupplies.com\/products\/s-p-crhb-4-250-n-250mm-roof-mounted-fan","provider":"Direct Duct Supplies","version":"1.0","type":"link"}