{"product_id":"20-axial-ac-standard-metal-blower","title":"20\" Axial AC Standard Metal Blower","description":"\u003ch2\u003eAllegro 20\" Axial AC Standard Metal Blower — High-Volume Ventilation for Large Confined Spaces\u003c\/h2\u003e\n\u003cp\u003eThe Allegro 9525 is a 20-inch axial AC blower engineered for maximum airflow output in demanding construction, industrial, manufacturing, and confined space ventilation applications. Built around a 16-gauge cold rolled steel housing powder-coated in safety orange, this unit delivers up to 4,650 CFM of free-air flow from a 1\/2 HP motor running on 115V AC. Designed for contractors and trades professionals who require a durable, portable, and certified ventilation solution, the 9525 is UL Listed and certified to CSA Standard C22.2 No.113.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eALLEGRO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eItem #\u003c\/td\u003e\n\u003ctd\u003e9525\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e741851952505\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e69 lbs. (unit); 56 lbs. (per linecard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eConstruction, Industrial, Manufacturing, Confined Space\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHorsepower\u003c\/td\u003e\n\u003ctd\u003e1\/2 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e115V AC, 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003e16-gauge cold rolled steel, powder-coated safety orange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFan Blade\u003c\/td\u003e\n\u003ctd\u003eGlass reinforced Polypropylene (PPG) three-blade fan with aluminum hub\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrill\u003c\/td\u003e\n\u003ctd\u003eSteel\/zinc plated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFeet\u003c\/td\u003e\n\u003ctd\u003e4 rubber feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange\u003c\/td\u003e\n\u003ctd\u003eInterchangeable for intake or exhaust mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring\u003c\/td\u003e\n\u003ctd\u003eAvailable in US and International wiring configurations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL Listed; CSA Certified (CSA Standard C22.2 No.113)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAirflow — Free Air\u003c\/td\u003e\n\u003ctd\u003e4,650 CFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAirflow — One 90° Bend\u003c\/td\u003e\n\u003ctd\u003e3,150 CFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAirflow — Two 90° Bends\u003c\/td\u003e\n\u003ctd\u003e2,950 CFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAvailable Items\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eOrder No.\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e9525\u003c\/td\u003e\n\u003ctd\u003e20\" Axial AC Standard Metal Blower (US wiring)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e9525-E\u003c\/td\u003e\n\u003ctd\u003e20\" Axial AC Standard Metal Blower (International wiring)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eCompared to smaller-diameter axial blowers in the Allegro lineup, the 20\" 9525 delivers substantially higher free-air CFM than the 16\" standard metal blower (3,400 CFM) while remaining in the standard output class — making it the right choice when large-area ventilation is needed without stepping up to a 2 HP high-output motor. For applications requiring even greater airflow, Allegro also offers the 20\" High Output Metal Blower (9525-50) at 2 HP and 7,500 CFM free air, and an explosion-proof variant (9525-01) for hazardous environments.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003ch4\u003eHigh-Volume Axial Airflow\u003c\/h4\u003e\n\u003cp\u003eDelivering 4,650 CFM in free air, 3,150 CFM through one 90° bend, and 2,950 CFM through two 90° bends, this blower is designed for applications requiring a maximum amount of output. The axial design is optimized for high airflow with lower pressure, making it well-suited for shorter duct runs and spaces where moving large volumes of air quickly is the priority.\u003c\/p\u003e\n\u003ch4\u003e16-Gauge Cold Rolled Steel Housing\u003c\/h4\u003e\n\u003cp\u003eThe heavy-duty steel housing withstands the rigors of job site use while the powder-coated safety orange finish provides high visibility and corrosion resistance. This construction ensures longer blower life and helps lower total cost of ownership over time.\u003c\/p\u003e\n\u003ch4\u003eInterchangeable Flange for Intake or Exhaust Mounting\u003c\/h4\u003e\n\u003cp\u003eThe interchangeable flange allows the blower to be configured for either intake (supply) or exhaust (extraction) ventilation without additional hardware. This flexibility lets contractors adapt the unit to the specific ventilation strategy required for each confined space entry.\u003c\/p\u003e\n\u003ch4\u003eGlass Reinforced Polypropylene Three-Blade Fan with Aluminum Hub\u003c\/h4\u003e\n\u003cp\u003eThe PPG three-blade impeller is engineered to move high volumes of air efficiently within the steel housing. The aluminum hub provides a secure, durable connection between the blade assembly and the motor shaft.\u003c\/p\u003e\n\u003ch4\u003eIntegrated Carrying Handles\u003c\/h4\u003e\n\u003cp\u003eBuilt-in carry handles make it straightforward to transport the blower to and from the job site, even in tight access situations. The 4 rubber feet provide stable placement on uneven surfaces once positioned.\u003c\/p\u003e\n\u003ch4\u003eUL Listed and CSA Certified\u003c\/h4\u003e\n\u003cp\u003eThe 9525 is UL Listed and certified to CSA Standard C22.2 No.113 (Fans and Ventilators), giving contractors and safety managers documented assurance that the unit meets recognized North American product safety standards. International wiring configurations (9525-E) are also available for global project requirements.\u003c\/p\u003e\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003ch4\u003eConfined Space Ventilation\u003c\/h4\u003e\n\u003cp\u003eProvides fresh air supply or contaminant extraction in manholes, vaults, tunnels, vessels, and other permit-required confined spaces prior to and during worker entry, in compliance with OSHA ventilation requirements.\u003c\/p\u003e\n\u003ch4\u003eConstruction Site Ventilation\u003c\/h4\u003e\n\u003cp\u003eMoves large volumes of air through enclosed structures, basements, or partially completed buildings to control dust, fumes, and humidity during active construction phases.\u003c\/p\u003e\n\u003ch4\u003eIndustrial Facility Ventilation\u003c\/h4\u003e\n\u003cp\u003eSupports air quality management in manufacturing plants, distribution centers, and industrial facilities where high-volume airflow is needed across large open areas or through ductwork with minimal bends.\u003c\/p\u003e\n\u003ch4\u003eManufacturing Process Ventilation\u003c\/h4\u003e\n\u003cp\u003eExhausts process fumes, heat, or airborne particulates from manufacturing work zones, helping maintain safe ambient air conditions for workers.\u003c\/p\u003e\n\u003ch4\u003eDuctwork, Hoppers, Silos, and Storage Bins\u003c\/h4\u003e\n\u003cp\u003eSuitable for ventilating enclosed storage structures and process vessels where large-diameter, high-CFM airflow is required to purge or refresh the internal atmosphere.\u003c\/p\u003e\n\u003ch3\u003eCompatible Materials\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStandard (non-hazardous) atmospheres in confined spaces\u003c\/li\u003e\n\u003cli\u003eConstruction site enclosures and partially completed structures\u003c\/li\u003e\n\u003cli\u003eIndustrial and manufacturing work zones\u003c\/li\u003e\n\u003cli\u003eDuctwork systems with minimal 90° bends\u003c\/li\u003e\n\u003cli\u003eManholes, vaults, tunnels, and pipelines\u003c\/li\u003e\n\u003cli\u003eHoppers, silos, storage bins, and vessels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Documents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0551\/8396\/6382\/files\/yyceyzilclkoimlwk4zr_47191264-1e08-4d7b-bcaf-b1281c2c4258.pdf?v=1791922972\" rel=\"noopener\" target=\"_blank\"\u003eAllegro Ventilation Blowers Linecard\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the free-air CFM rating of the 9525?\u003c\/strong\u003e\u003cbr\u003eA: The 20\" Axial AC Standard Metal Blower (9525) delivers 4,650 CFM in free air, 3,150 CFM through one 90° bend, and 2,950 CFM through two 90° bends.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this blower be used for both intake and exhaust ventilation?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The interchangeable flange allows the 9525 to be mounted for either intake (supply air) or exhaust (extraction) configurations without additional hardware.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the 9525 available in an international wiring configuration?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The 9525-E variant is wired to meet international standards for use outside the US.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this blower suitable for use in hazardous (explosive) atmospheres?\u003c\/strong\u003e\u003cbr\u003eA: No. The standard 9525 is rated for non-hazardous environments only. For hazardous locations, Allegro offers the 20\" Axial Explosion-Proof Metal Blower (9525-01 \/ 9525-01E).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What certifications does the 9525 carry?\u003c\/strong\u003e\u003cbr\u003eA: The 9525 is UL Listed and certified to CSA Standard C22.2 No.113 (Fans and Ventilators).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How far should the blower be set back from a confined space opening?\u003c\/strong\u003e\u003cbr\u003eA: Allegro recommends setting the blower back a minimum of five (5) feet from the opening when ventilating a manhole or tank, to prevent hazardous gases purged from the confined space from being drawn back into the blower intake and recirculated into the space.\u003c\/p\u003e","brand":"Allegro","offers":[{"title":"Default Title","offer_id":67687492681902,"sku":"9525","price":2082.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0551\/8396\/6382\/files\/25ff1e08041a500cd25eabca82706f5b5d1b33bc.jpg?v=1791922976","url":"https:\/\/www.diamondtoolstore.com\/products\/20-axial-ac-standard-metal-blower","provider":"Diamond Tool Store","version":"1.0","type":"link"}