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UniFlow Auxiliary Air Fume Hood with Vapor Proof Light 72" 21621

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    UniFlow Auxiliary Air Fume Hood with Vapor Proof Light 72" 21621

    SKU: 21621

    Vendor: Hemco
    Part Number: 21621

    HEMCO UniFlow Auxiliary Air Fume Hood with Vapor Proof Light 72" 21621

    The UniFlow Auxiliary Air Fume Hood 21621 is a supply air solution for many labs that have insufficient room airflow. Equipped with auxiliary air plenum to induce added airflow to face opening of hood. Supply air ducting and remote blower is required. Equipped with vapor proof-light and switch. All electrical components and services are UL and CSA listed. The UniFlow Auxiliary Air Fume Hood 21621 measures 72"x24.25"x59" WxDxH. Optional hood accessories and hood ventilation systems are available.

    Requires a remotely located exhaust blower & auxiliary supply blower

    UniFlow Auxiliary Air Flow Diagram
    Airflow (Sash Open)
    Auxiliary make-up, air enters
    supply plenum and is distributed down the exterior face in through sash opening.
    Airflow (Sash Closed)
    Auxiliary make-up, air
    diverts from the supply
    plenum through the airby-
    pass opening into the fume chamber.
    Complete Your Fume Hood Installation

    Refer to PLAN-A-HOOD to assist in the planning of your UNIFLOW Fume Hoods.

    • Auxiliary Air Supply Blowers
    • Ventilation Systems (Filters and Scrubbers)
    • Airflow Monitors and Sash Stop
    • Plumbing and Electrical Services Factory installed according to your exact specifications
    • Base Cabinets and Worksurfaces


    Specifications and Ordering Info
    UniFlow Auxiliary Air Fume Hood with Vapor Proof Light

    Superstructure is unitized composite FRP fire corrosion resistant non-metallic construction. Integral fume chamber is seamless glass smooth with all coved corners with adjustable VaraFlow baffle system and bell shaped exhaust collar. Picture frame sash opening has counter balanced clear tempered safety glass sash with chemical resistant PVC framing, track and aerodynamic sash lift. Built-in auxiliary air supply feature to reduce volume of conditioned air from room. Vapor-proof fluorescent T-5 light fixture and switch pre-wired to single point junction box, 115 volt, 60Hz AC, All electrical components UL Listed.

    Requires a auxiliary supply blower see below and a remotely located exhaust blower


    Dimensions: WxDxH 72"x24.25"x59"

    Belt drive steel blower and impeller wheel are epoxy coated. V-belt drive and adjustable pulleys permit field balancing. Weather housing is furnished. Motor has thermal overload protection. Specify 115 V 1 ph, 230V 1 ph, 230/460 V 3 ph. Blowers are based on 50% supply make-up. 1/4 HP 542 CFM @ 1/2” S.P. Loss
    Factory installed to specified designated height. Also available for field installation.
    AirFlow Monitor  
    Continuously monitors face velocity airflow of fume hood. Select and calibrate at desired FPM velocity set point. If the hood face velocity falls below the set point, an audible alarm sounds and a visual red indicator light appears. Airflow alarm is factory installed or can be field installed. 115 volt 60Hz 51406

    All returns must be authorized by Spectra Services in order to insure proper credit and must be requested within 30 days of purchase. All returns are subject to a minimum 15% restocking charge. For returns not due to error on behalf of Spectra Services, the customer is responsible for all transportation fees related to the returned product. To ensure proper credit, each product return must include the following information:

    • Customer name and address
    • Purchase order number
    • Spectra Services shipping order number
    • Date of invoice
    • Item number of returned item(s)
    • Spectra Services return authorization number (RMA)
    • Reason for return

    Non-Returnable Goods
    Unfortunately, Spectra Services is unable to accept the following returns at this time:

    • Products not in completely resalable condition (including products with damaged, missing, or defaced labeling or packaging
    • Chemicals, reagents, diagnostics, sterile, or any controlled products (unless products do not meet specification
    • Laboratory apparatus or instruments that have been used or are without the original packaging, labeling and operating manuals
    • Refrigerated products or other perishables
    • Products which are not inventoried by Spectra Services and are not able to be returned to the manufacturer
    • Products purchased on a special order
    • Products not purchased from Spectra Services
    • Products with an expired shelf life or an expiration date too short for resale
    • Discontinued products

    Spectra Services reserves the right to review this policy on a case-by-case basis.

    Pre-Owned Products

    Upon receipt of the pre-owned product(s), the customer has one week to evaluate the product to ensure it meets their expectations. If for some reason the customer decides to return the product, they may do so at any point during those seven (7) days for a full refund. No restocking fee will be assessed, however, the customer is responsible for the return shipping costs. Full credit will be issued upon receipt and inspection of the item(s) to ensure equipment was returned in the same condition it was initially shipped out in.

    Important Information

    All exchanges and returns require the completion of a Return Merchandise Authorization (RMA) form. Once completed, please return the merchandise immediately as the RMA number is only active for ten (10) days from the date of issuance.

    Charges associated with returning items are the responsibility of the customer unless the item(s) arrived defective, damaged, or incorrect.

    Spectra Services highly recommends that return packages be insured for full value and packaged securely to prevent shipping damage.

    We're Here To Help

    Your satisfaction is important to us! Use this form Contact Us to email us your questions about products, online orders, store experiences and more.

    Order Questions:

    If you need help or have any other questions concerning your orders, please click on the "Contact us" form above or call: 800-955-7732.

    Our Address:
    Spectra Services, Inc.
    249 David Parkway
    Ontario, NY 14519 US
    Phone: 800-955-7732
    I'm having a hard time searching for a product.

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    Do you charge sales tax?

    Currently, we are authorized to collect sales tax in California, Connecticut, Florida, Indiana, Massachusetts, New Jersey, New York, Ohio, Pennsylvania, Texas and Washington. If we ship to any of these states, we are obligated to charge sales tax unless you provide us with a tax exempt certificate. You can either fax a copy of the certificate to our New York office (585.265.4374) or email it to ([email protected]).

    Do you offer special pricing for government and educational entities?

    Absolutely! Contact any one of our sales specialists to work out the details!

    I just placed an order. Can I modify/cancel it?

    We pride ourselves on providing you with a responsive and efficient buying experience. We are able to address your concerns in an accurate and timely fashion, and can usually ship your order within 24 hours of order placement. If you contact us within that window, we'll do our absolute best to accommodate your needs and concerns prior to shipment.

    Do you accept international orders?

    Of course! While we require a bank wire prior to shipment of the product on international orders, we assure you that the process is just as smooth for domestic orders. Take a look at our International Shipping Policy and contact us if we can assist.

    Will I be charged for shipping?

    Shipping charges will be added to your invoice unless you provide us with your UPS, DHL, or FedEx account number. For a more detailed insight into our shipping process, see our shipping information page.

    I received a damaged shipment. What can I do?

    Accidental damage during shipment can sometimes happen. When you take delivery of your freight, please inspect thoroughly for any visible damage to the outside of the shipping container before signing for it. If there are multiple pieces to the shipment, please account for all them. Should you find that any of the products are damaged or missing after receipt, contact us within three days to address the matter.

    I'd like to make a return. How do I do that?

    Take a look at our Return Policy, and then contact us to continue with the process. Let us know if you have any questions.

    Can you guarantee pricing and availability?

    While we attempt to list and provide you the most up-to-date pricing, we reserve the right to make changes. Additionally, we cannot guarantee that we will always have a product in stock, but we do our best to accommodate your needs. If you have questions regarding pricing or availability, please do not hesitate to ask.

    Can you explain where you come up with the 'List Price,' please?

    Our "List Price" represents the full retail price as suggested by the supplier or manufacturer, the price estimated based on comparable items offered elsewhere in the marketplace, a former price the item was offered for by Spectra Services, or the price estimated in accordance with industry standards. Please note that we do our best to provide accurate list prices, and that it may vary by geographic location.