Harrison Machine & Plastic Corporation is involved in the fabrication and distribution of plastics primarily directed towards the industrial market, where fluid and air handling systems are used in extremely corrosive environments.

Harrison is an industrial custom fabricator, recognized as an industry leader for thermoplastic air handling HARRISON SUPERDUCT® systems.

Established in 1970, Harrison specializes in custom fabrication for pressure, drainage and air applications using schedule 40 PVC, schedule 80 PVC, and PVC thin wall duct. Harrison has proven itself over the years as a dependable fabricator that can handle any job because of their CNC machining capabilities. Harrison’s schedule 40 and schedule 80 fluid handling fittings, for both drainage and pressure applications enables it to provide a complete pipe and fitting package for the transport of either air or fluids.
The Harrington Difference
Providing over 60 years of exceptional service

Harrington is a Harrison distributor of various products. Call our toll-free number at 1-800-213-4528 and you will be connected to a live person – not a recording. You can also use the contact form below for any questions regarding our line of Harrison products.

HARRISON Machine & Plastic Corporation Duct Fittings

Harrison Machine & Plastic specializes in custom PVC and CPVC machining for industrial applications. Harrison takes pride in its long term reputation as an innovator and service oriented manufacturer of quality plastic fabrications.


PVC Duct Pipe Sizes 2" to 60"



HARRISON SUPERDUCT® PVC duct pipe is cost-effective for industrial and institutional corrosive fume, exhaust and air applications.


HARRISON SUPERDUCT® PVC pipe is light weight, making it easy to handle and install.


HARRISON SUPERDUCT® PVC duct pipe has excellent chemical resistance to many fumes, gases, and fluids. It stands tough against most acids, bases, salts, aliphatic solutions, oxidants, and halogens, making HARRISON SUPERDUCT® PVC pipe your #1 choice for your PVC duct system.


HARRISON SUPERDUCT® PVC pipe is extruded in sizes thru 24″ and fabricated (rolled) in sizes thru 60″. Standard duct lengths are 10ft. or 20ft. lengths, while 26″ diameter and above has a standard length of 4ft. Our 22″, 26″ duct diameters and larger are furnished with a butt-welded seam using no filler rod.


PVC Duct Pipe Sizes 2" to 60"

Advantages of Corzan® CPVC Pipe:

CPVC Corzan® material has unique physical properties making Corzan® a desireable product for air handling duct systems. Corzan® CPVC properties include:

  • CPVC Corzan® material has higher impact strength and fire resistance capabilities
  • Corzan® CPVC duct has an upper temperature limit of 200° F
  • CPVC pipe is light weight, easy to install and is cost effective
  • Extruded CPVC duct pipe thru 24″ diameter meets ULC S102.2 with a maximum flame spread rating of 5 or less and a maximum smoke generation of 25 or less
  • Corzan® CPVC duct fittings thru 24″ diameter are fabricated from extruded duct pipe stock which meets the ULC S 102.2 requirement

Buy your next Harrison product from Harrington and experience the difference.

Can’t find what you’re looking for?

Call our toll-free number at 1-800-213-4528 and you will be connected to a live person – not a recording. You can also use the contact form above for any questions regarding Harrison products.