Slimduct 5.5"

Slimduct professional construction offers strength & longevity all can appreciate. Offered in 3 sizes, they carry single/ multiple exposed linesets, & come in 4 color choices. Complete line of fittings assures each system is finished professionally.

  • Weather resistant PVC, UV stabilized & fire resistant. Tested to over 2,000 hours.
  • Temperature range -4°F to 140°F
  • Complements any residential or commercial building, available in SD77 (2"), SD100 (3"), SD140 (51/2") and 4 color options (white, ivory, brown and black).
  • 78" duct lengths, and 15 fittings assuring complete flexibility of installation
  • 3 year warranty

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Brand : Slimduct
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Slimduct is a superior choice for covering and protecting linesets.

Slimduct has been setting the standard as the market leader with its renowned craftsmanship and reliability. Slimduct's premium lineset cover is made of high-quality materials that allow for a precise fit and tight seal, while its glossy finish adds aesthetic appeal.

Comes in 4 colors:

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 width= MOST durable

 Slimduct is made of high-quality materials that are resistant to impact, UV radiation, and other environmental factors. It also has a flame-retardant coating that meets industry safety standards.

 width= easy to install

Slimduct is designed to be easy to install, with a snap-together design that eliminates the need for tools or fasteners. Slimduct offers wide range of sizes, from 2.75” to 5.5”, to accommodate different lineset sizes and configurations. 


The iconic, stylish Slimduct design has been proven over the years to be the preferred look for installers of lineset covers.

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The Industry's Best Product Warranties

Minimum 3-year limited warranty on RectorSeal Products. No registration required.


Outstanding Technical Customer Support

Providing exceptional technical customer support for on-site job requirements and project specifications.

Product Availability and Fulfillment

Delivering a seamless purchasing experience by offering a diverse selection of products, ensuring availability and quick fulfillment.

Complimentary eTraining Courses

Offering a variety of eTraining from self-directed courses via RectorSeal Academy, on-demand one-on-one training or live webinars.


“RectorSeal is commited to achieve Total Customer Satisfaction by exceeding customer’s expectations, requirements and needs”

We assure our quality policy commitment by:

VOICE OF THE CUSTOMER Monitoring the Voice of Customer and taking appropriated actions.
talents and competencies Effectively developing all employees’ talents and competencies.
key performance indicators Tracking and improving our Key Performance Indicators (KPIs).
Quality products Establishing robust processes to deliver quality products.
on-time and complete Delivering on-time and complete customer orders.
continuously improving Establishing and continuously improving our quality management system.