Plastec R 20 Direct Drive Forward Curve Roof Mounted Polypropylene Blower, 610 CFM, 1/4 HP, Single Phase, 115/230 V

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Plastec

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Model

R20SS6P025

ID

208750

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Product Features
  • Direct-drive forward-curve design
  • Made from 100% recyclable polypropylene
  • Pre-Assembled & Tested
  • Long-Lasting Performance

OVERVIEW

The R 20 Roof Mounted Blower is engineered for maximum durability and corrosion resistance in some of the most challenging environments. Whether you're working in coastal regions, chemical processing facilities, or indoor aquatic centers, this blower offers an ideal solution for safe and efficient fume exhaust. Constructed from heavy-duty polypropylene and enhanced with Hindered-Amine Light Stabilizers (HALS), the R 20 stands up to acids, harsh chemicals, and UV exposure, ensuring dependable long-term performance. Its forward curve, direct drive design provides powerful airflow in a compact and lightweight housing, while its plug-and-play installation reduces labor time. The R 20 is also pre-wired and factory pre-assembled, making it ready to install straight out of the box.

Key Features & Benefits:

  • Thick-walled construction resists chemical attack and salt air, ideal for aggressive and coastal environments.
  • HALS-infused polypropylene protects against sun damage and prolongs service life even in exposed installations.
  • Designed for optimal airflow in roof-mounted or wall-mounted applications.
  • Built to fit a 21" x 21" roof curb, simplifying installation across commercial and industrial sites.
  • Easy to handle during installation while maintaining strength and long-term structural integrity.
  • Saves time on-site while meeting safety and code requirements.
  • Protects against debris and animal intrusion without compromising airflow.

Warranty Information

Motor Warranty

All motors are covered by a one-year warranty from the date of shipment, provided by the motor manufacturer. If service is required during the warranty period, the motor must be taken to the nearest authorized motor service station. Failure to use an authorized service station may void the motor warranty. If you are unsure of an authorized service location, contact the factory for assistance. Installation, removal, re-installation costs, and any consequential damages are not covered.

Blower Housing Assembly Warranty

The blower housing assembly is warranted to be free from defects in materials and workmanship for two (2) years from the date of original shipment. Defective units or parts reported within this period may be replaced at the manufacturer’s option when returned to the factory with transportation prepaid by the sender.

Exclusions

The following items are not covered by this warranty:

  • Normal wear from heat, abrasion, or chemical exposure
  • Damage from improper installation, incorrect electrical connections, or unauthorized alterations
  • Damage resulting from misuse, abuse, or abnormal operating conditions
  • Lack of proper maintenance
  • Transportation costs to and from the factory for warranty repairs
Limitation of Warranty and Liability

This warranty is limited to repair or replacement of defective parts as described above. The manufacturer is not responsible for installation, removal, or re-installation costs, nor for any consequential damages resulting from product failure or improper operation.

See full warranty on Installation, Operation & Maintenance Manual

Durable Materials & Construction

The Plastec R-20 blower is engineered to perform reliably in harsh outdoor and corrosive environments. Its entire airflow path, including the housing, impeller, and exposed internals, is made of thick-wall polypropylene that provides strong resistance to acids, salts, solvents, moisture, and harsh chemicals. To guard against long-term degradation from UV exposure, the polypropylene is compounded with HALS (Hindered-Amine Light Stabilizers), helping preserve material strength and color over time. As a direct-drive, forward curve blower, the R-20 eliminates belts, pulleys, and exposed mechanical linkages, reducing the number of moving parts that can wear out or become misaligned. Thanks to its all-polypropylene construction, the R-20 is significantly lighter than comparable metal fans, simplifying rooftop installation while maintaining excellent structural integrity.

In operation, the R-20 demonstrates outstanding durability in outdoor, corrosive, and coastal environments, resisting rust, chemical attack, salt exposure, and temperature fluctuations. Its design provides an ideal balance of strength, corrosion resistance, and easy installation for demanding ventilation applications.


Suitable Applications for Plastec R 20 Polypropylene Blower

  • Coastal & Marine Environments: Resists salt, moisture, and corrosion in docks, shipyards, and seaside facilities.
  • Chemical Processing Plants: Handles corrosive or toxic fumes from mixing, plating, and etching operations safely.
  • Laboratories & Fume Hoods: Efficiently vents chemical vapors and contaminants to maintain safe air quality.
  • Indoor Aquatic Centers: Operates reliably in chlorine-heavy, humid pool areas to prevent corrosion and ensure airflow.
  • Wastewater & Treatment Plants: Manages harsh airflows with moisture and chemical residues found in treatment systems.
  • Chemical & Acid Storage Areas: Safely ventilates rooms storing acids, solvents, or other corrosive materials.
  • Industrial & Manufacturing Sites: Suited for tough exhaust demands and environments with chemical-laden air.
More Information
Plastec R 20 Direct Drive Forward Curve Roof Mounted Polypropylene Blower, 610 CFM, 1/4 HP, Single Phase, 115/230 V
FeatureSpec
SKUR20SS6P025
Weight (in lbs)43.14
Brand/ManufacturerPlastec
UPC605468175057
Additional InformationInlet Diameter: 6.28" , Outlet Diameter: 7.93"
Drive TypeDirect
Static Pressure0.63 wg
Maximum CFM610 CFM
Decibel Level (dBA)65 dbA
EnclosureTEFC
Motor RPM1120
Horsepower1/4 HP
Electrical115/208-230
PhaseSingle Phase
Amperage Requirement4.16A | 2.26A - 2.08A
Outlet Diameter7.93"
Inlet Diameter6.28"
CertificationUL Listed , AMCA and CSA Certified
Length22.01"
Height24.52"
Width22.40"
Operating Temperature-39°F - 140°F
Warranty2-Year Manufacturer Warranty, 1-Year Parts and Motor warranty
Resources To view PDF documents, you will need Adobe® Acrobat® Reader.
Safety InformationPROPOSITION 65 WARNING
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Customer Questions
Can static electricity build up inside the blower?
No, it’s made with carbon-impregnated polypropylene that safely removes static. This helps prevent sparks, making it safe to use in areas with flammable vapors or dust.
What does it mean when the blower has a horizontal discharge?
The R-20 releases air horizontally from the roof curb instead of blowing straight up. This makes it easier to connect with ducts that run sideways or into existing ventilation systems.
What is the maximum air temperature this blower can handle continuously?
The R-20 can handle continuous inlet air temperatures up to about 140°F (60°C). It may handle short bursts of higher temperatures, but keeping it below that range helps extend its lifespan.
Can this blower be installed on a sloped roof?
Yes, it can. As long as proper flashing and supports are used, the R-20 works well on both flat and sloped roofs.
Is the blower wired or does it plug in?
The blower is typically hardwired by a licensed electrician to ensure a safe and permanent installation. If you have any further questions, please don't hesitate to contact us. Thanks.
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