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title: "Flowmark 888 Flexible Duct FLO-3509 - Specs & Details"
description: "Flowmark 888 Flexible Duct FLO-3509: Diameter: 4 in; Length: 25 ft; Insulation R-Value: 4.2"
llms_summary: "Flowmark 888 Flexible Duct FLO-3509. (Springfield, Missouri, United States). Product. Brand Flowmark. Diameter 4 in. Insulation R-Value 4.2. Length 25 ft. Material Aluminum/Polyester Core. Max Temperature 300 F. Model Number FLO-3509. Product catalogs. Flowmark 888 Flexible Duct FLO-3509: Diameter: 4 in; Length: 25 ft; Insulation R-Value: 4.2. canonical profile on Structured Pages"
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slug: flowmark-888-flexible-duct-flo-3509
content_sha256: 5964c01678320fc046e41a862eb4ea6de5736ebd4cf60689a926522a297a4ce1
indexed_at: "2026-08-05T20:09:02.916Z"
date_modified: 2026-08-04
license: citation-free
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    slug: flowmark-888-flexible-duct-flo-3509
    name: Flowmark 888 Flexible Duct FLO-3509
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---
# Flowmark 888 Flexible Duct FLO-3509

The Flowmark 888 Flexible Duct FLO-3509 is a sample flexible ductwork entry with representative specifications, generated for catalog demonstration purposes.

*Last updated: 2026-08-04*

## Record

- **Title**: [Flowmark 888 Flexible Duct FLO-3509](https://structuredpages.com/flowmark-888-flexible-duct-flo-3509/?format=md)
- **Place**: Springfield, Missouri, United States
- **Use case**: Product catalogs
- **Website**: https://www.flowmark.example.com
- **Phone**: (417) 555-1040
- **Email**: sales@flowmark.example.com
- **Contact address**: Springfield, Missouri, United States
- **Coordinates**: 37.209, -93.2923
- **CTA**: [Get a Quote](mailto:data@hypersonicseo.com?subject=HVCE%20product%20catalog%20inquiry)
- **CTA note**: Ask about publishing a catalog like this with HVCE - not a quote on this SKU.

### Summary

The Flowmark 888 Flexible Duct FLO-3509 is a sample flexible ductwork entry with representative specifications, generated for catalog demonstration purposes.

### Description

The Flowmark 888 Flexible Duct FLO-3509 is a sample flexible ductwork entry with representative specifications, generated for catalog demonstration purposes. Representative specifications for this flexible ductwork entry include Diameter: 4 in; Length: 25 ft; Insulation R-Value: 4.2. This entry illustrates how a real product in this category would appear once structured into HVCE's catalog format, with distinct fields for filtering, comparison, and search. This is placeholder demonstration data, not a real, purchasable product.

### Categories

- flexible ductwork

### Attributes

| Property | Value |
| --- | --- |
| Brand | Flowmark |
| Diameter | 4 in |
| Insulation R-Value | 4.2 |
| Length | 25 ft |
| Material | Aluminum/Polyester Core |
| Max Temperature | 300 F |
| Model Number | FLO-3509 |

## Downloads

- [Specification Sheet](/files/industrial-distribution-demo/shared/specification-sheet.pdf)
- [Certification](/files/industrial-distribution-demo/shared/certification.pdf)
- [Application Notes](/files/industrial-distribution-demo/shared/application-notes.pdf)
- [Installation & Maintenance Guide](/files/industrial-distribution-demo/shared/installation-maintenance-guide.pdf)

## Frequently asked questions

### What are the key specifications of the Flowmark 888 Flexible Duct FLO-3509?

Published figures list Diameter: 4 in; Length: 25 ft; Insulation R-Value: 4.2.

### What is the diameter of this item?

The diameter is 4 in.

### Is the Flowmark 888 Flexible Duct FLO-3509 suitable for standard hvac applications?

Yes - this entry represents a typical flexible ductwork product for this category; a real catalog entry would confirm exact fitment and compliance details.