UniFlow Auxiliary Air Fume Hood with Vapor Proof Light 96" 21821

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Vendor: Hemco
Part Number: 21821

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HEMCO UniFlow Auxiliary Air Fume Hood with Vapor Proof Light 96" 21821

The UniFlow Auxiliary Air Fume Hood 21821 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 21821 measures 96"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 HEMCO’s 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	96"
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	Model 21821
Dimensions: WxDxH 96"x24.25"x59"	Model 21821

Accessories:
AUXILIARY AIR SUPPLY BLOWER
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 800 CFM @ 1/2” S.P. Loss	51904
SAFETY SASH STOP
Factory installed to specified designated height. Also available for field installation.	51651
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

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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
Labroatory 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.

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Your satisfaction is important to us! Use the form below 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 fill out the form or call: 800-955-7732.

Our Address:

Spectra Services, Inc.
6359 Dean Parkway
Ontario, NY 14519 US
Phone: 800-955-7732

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