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  • Saddle Vent®

    The Saddle Vent® Tank and Manhole Ventilation provides continuous access and sunlight to manholes during ventilation. Unobtrusive vents take up only 3" of space allowing for easy entrance and exit. Manhole Saddle Vent® is 43 ½"L x 14"W x 8" outside diameter. Tank vents measure 27 ¾"L x 13 ¾" W x 8" outside diameter.

  • Venturi Blowers

    The Venturi Blowers from Allegro are a perfect solution to moving air in refineries, utility and power plants, shipyards, paper and pulp plants, the marine and steel industry and manhole operations. Anywhere where fumes that may be poisonous, explosive or hazardous from process towers, tanks, large pipes or confined space need to be removed.

  • Heavy Duty Blower

    High performance and durability are built into this Heavy Duty Blower. Its large 1 1/2 hp motor and 8" ports deliver high CFM allowing workers to draw out or push air in. It is designed with a large metal base with locking wheel casters and three carry handles for easy maneuverability. The electric motor is totally enclosed and the high impact polyethylene housing offers greater durability.

  • Heavy Duty Explosion-Proof Blower

    Electric, explosion-proof motor is UL/CSA listed. Single-phase motor includes Hazardous Location NEMA rated 115V plug for use with explosion-proof socket (included). ABS housing provides non-sparking safety. Meets Class I, Divisions I and II, Group D and Class II, Divisions I and II, Groups F and G Hazardous Location Requirements.

  • Standard Blower

    Excellent for most ventilating needs, especially confined space. Designed with tough ABS housing, metal safeguards and a steel fan for durability. Two 8" ports offer positive ventilation or fume extraction, and the metal base with feel offers greater stability. The electric motor is cage-enclosed for protection. Comes with an on/off switch and built-in carry handle for increased portability.

  • Gasoline Blower

    Perfect for remote location where electricity is unavailable, this gasoline-powered, 3 ½ hp blower offers high flow rates. The 8" ports and steel guards provide safety and the ABS housing with built-in handle offers durability and convenience. It is designed with unique spring-loaded feet that minimize blower walking and offer greater stability.

  • Gas Blower / Honda

    Offering portability and the same output and weight as the 9505, plus the durability of a Honda engine. Polyethylene housing with buil-in handle offers convenience in transport. The sturdy metal base offers great stability. Blower includes 10 foot metal exhaust hose extension.

  • AC & DC Axial Blowers

    AC Axial Blower With the highest output available from an 8" axial blower, this compact unit offers light weight and high output from an AC electric motor. It is designed with tough steel construction, a durable grill, convenient carrying handle and rubber feet. Its small profile means easy storage. Certified to CSA STD C22.2 No 113. Air delivery certified CEESI.

  • AC & DC Axial Blower & Canister

    This 8" axial blower is an all-in-one ventilation system. The design allows ducting to collapse into a built-in canister for easy storage. Includes blower, built-in storage canister and 15 feet or 25 feet of ducting. Free air output: 1275 cfm.

  • Two Speed Blower

    This blower offers greater flexibility by allowing workers to use high speed in some applications such as purging an area, and the lower speed in other sites such as very dusty environments. The 8" ports allow for positive or negative ventilation and the steel box mounted electric motor and tough polyethylene housing are designed for durability.

  • Air-Driven Blower

    Ideal for areas where a compressor is readily available, this air-driven model requires 30 CFM at 40 psi. It uses an aluminum fan for explosion-proof requirements and includes a steel base, polyethylene housing, 2-stage filter, regulator, and lubricator. If used in hazardous environments, use statically conductive ducting.

  • 12 Inch Standard Axial Blower

    This unit can be used for both delivering fresh air or extracting contaminated air. Tough steel construction with handle and weighing only 27 lbs. makes this blower easy to transport. Add 12" standard ducting for greater flexibility. High RPM motor.

  • 12 Inch Explosion-Proof Blower

    Same as our 12", but includes explosion-proof UL/CSA listed, single phase motor and NEMA rated 115V plug and socket. Meets Class I, Division I and II, Group E, F, G Hazardous Requirements. Warning: Explosion-Proof Blowers must be used with statically conductive ducting.

  • Economy Lightweight Blower

    An economy version of the Standard Blower, this lightweight blower comes in at only 34 lbs. It has a tough metal base and durable ABS housing and works great with generators. Free air output: 1277 cfm.

  • AC Axial Explosion Proof Blower

    Electric, explosion-proof motor is UL/CSA listed. Single-phase motor includes NEMA rated 115V plug for use with explosion-proof socket (included). It offers tough steel construction and meets Class I, Divisions I and II, Groups C and D and Class II, Divisions I and II, Groups E, F and G Hazardous Location Requirements.

  • 16" Standard Blower

    For very large confined spaces this large, 16" axial blower delivers high output for drawing or pushing air. The durable and tough metal housing holds a 6 blade impeller. It is designed for easy stacking for multiple blower use.

  • CARPET BLOWER

    For speed drying of wet carpets, pads, floors and walls, this blower is powerful, durable and lightweight. This three speed model offers four angle operating positions. Balanced carry handle makes it easy to transport. They’re also stackable for convenient storage. UL approved, thermally protected motor with safety circuit breaker and 25' water resistant cord.

  • Centrifugal Blower Systems

    Allegro’s Complete Ventilation Systems include all the most-asked-for equipment for your confined space site. The systems include a choice of Allegro’s most popular blowers, six feet and fifteen feet of ducting with a storage bag, a Saddle Vent®, a 90° Elbow, and a Universal Mount. The Centrifugal Blower Systems offer lightweight portability with the highest output available.

  • Axial Blower Ventilation Systems

    Allegro introduces easy to order, easy to use Complete Ventilation Systems including all the most-asked-for equipment you need for your confined space site. The systems include a choice of Allegro's most popular blowers, six feet and fifteen feet of ducting with a storage bag, a Saddle Vent®, a 90° Elbow, and a Universal Mount.

  • 8 Inch Plastic COM-PAX-IAL Blower

    This lightweight, corosion, UV and chemical resistant polyethylene housing offers a superior design with durable construction.The carry handle is molded into the blower. This compact and super quiet unit features a polypropylene, nine blade fan, a steel/powder coated grill and comes with a 5ft. electrical cord or 15 ft. cord with Alligator clips.

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