Skip to content
FlashCo 3 x 4 x 10 TPO Throat Scupper
Regular price $73.90Orders start at $399 — combine any items to reach the minimum. Learn more
FlashCo 3 x 4 x 10 TPO Throat Scupper
The FlashCo 3 x 4 x 10 TPO throat scupper is a roof drainage outlet fitting sized 3 x 4 x 10 inches, finished for TPO membrane roofing systems. One scupper per order unit. Pair it with FlashCo scupper liners and the membrane manufacturer's flashing details.
Key Features:
- TPO finish: Finned/coated for TPO membrane systems where the membrane laps into the scupper throat.
- 3 x 4 x 10 sizing: 3 x 4 x 10 in. throat dimension fits standard scupper openings and liners.
- Roof drainage: Forms the throat of a through-wall or edge scupper drainage outlet.
- Applicable standard: Applicable to ASTM B749.
- Sold each: One scupper per order unit for job-by-job takeoff.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | FlashCo |
| Manufacturer model | STDHTW040310 |
| Sell unit | 1 scupper |
| Product line | TPO Throat Scupper |
| Dimensions | 3 x 4 x 10 in. |
| Product category | Ventilation and Drainage |
| Applicable standards | ASTM B749 |
| Intended use | Roof drainage scupper throat for TPO membrane systems |
| Product weight, complete sell unit | 1 lb |
Fit and Compatibility:
Designed for TPO roofing assemblies where the membrane is flashed into the scupper throat; coordinate with scupper liners, conductor heads and FlashCo metal accessories of matching size. Sold separately: liners, membrane and fastening.
Frequently Asked Questions (FAQ):
Q: What size is this scupper?
A: It is a 3 x 4 x 10 inch throat scupper.
Q: What membrane system is it for?
A: It is finished for TPO membrane roofing systems.
Q: What standard applies?
A: ASTM B749 is listed as applicable.
Q: Is the liner included?
A: No, the scupper throat is sold individually; liners and matching accessories are ordered separately.
Q: How is it installed?
A: Install per the roofing system manufacturer's scupper flashing detail, with membrane laps sealed into the throat per TPO welding practice.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Scupper throats are a common leak point — set the throat level and coordinate the opening with the wall detail before installation, then flash the TPO well into the scupper per the membrane manufacturer's detail. Order matching scupper liners in the same metal/finish so field-fabricated adapters aren't needed. Verify local code drainage requirements for scupper sizing.
Cut edges of metal scuppers are sharp — wear cut-resistant gloves, and coordinate with wall framing before cutting the opening.
Order the FlashCo 3 x 4 x 10 TPO Throat Scupper for your next TPO drainage detail.
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
