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TOPWET, Inc.

Plumbing Listing Program

Customer:

TOPWET, Inc.
Class:

Roof Drains
Location:

Burr Ridge, IL
Website:

www.topwet.com/
Listing No.:

P384-1
Effective Date:

March 20, 2025
Last Revised Date:

February 17, 2026
Expires:

N/A
Standards:

ASME A112.6.4-2003 Roof, Deck, and Balcony Drains.
Product:

TOPWET, Inc., Roof Drains of the following types:
• Vertical Roof Drains with integrated bitumen sleeve, 4” (102 mm) size.
• Horizontal Roof Drains with integrated TPO sleeve, 4” (102 mm) size.
• Retrofit Roof Drains with integrated PVC sleeve, 4” (102 mm) size.
Markings:

Products are marked in a permanent manner where it is readily visible after installation with the following:
a) Manufacturer’s name.
b) Product Model or Identification number
c) Month and year of Manufacturer
d) The wording “ASME A112.6.4-03” and Load Classification
e) QAI File Number (P384-1)
f) QAI logo with ‘us’ identifier, shown here:

Models:

Model(s)	Grate Load Classification	Integrated Sleeve Type	Description
TW __ S BIT TW __ H BIT TW RETRO __ BIT	Light Duty	Bitumen (BIT)	3” (76 mm)
			4” (102 mm)
			5” (127 mm)
			6” (152 mm)
			7” (178 mm)
TW __ S TPO TW __ H TPO TW RETRO __ TPO	Light Duty	Thermoplastic Polyolefin (TPO)	3” (76 mm)
			4” (102 mm)
			5” (127 mm)
			6” (152 mm)
			7” (178 mm)
TW __ S PVC TW __ H PVC TW RETRO __ PVC	Light Duty	Polyvinyl Chloride (PVC)	3” (76 mm)
			4” (102 mm)
			5” (127 mm)
			6” (152 mm)
			7” (178 mm)
TW __ S EPDM TW __ H EPDM TW RETRO __EPDM	Light Duty	Ethylene Propylene Diene Monomer (EPDM)	3” (76 mm)
			4” (102 mm)
			5” (127 mm)
			6” (152 mm)
			7” (178 mm)

The materials, products or systems listed in this directory have been qualified to bear the QAI Listing Mark under the conditions stated with each Listing. Only those products bearing the QAI Listing Mark are considered to be listed by QAI.

The standard herein listed is the currently accepted version within the relevant certification scheme, code or other requirements unless otherwise noted. Transition periods may apply. Upon request, QAI will provide information about the validity of any of its certifications.

No warrantee is expressed or implied, and no guarantee is provided that any jurisdictional authority will accept the Listing found herein. The appropriate authorities should be contacted regarding the acceptability of any given Listing.

Visit the QAI Online Listing Directory located at www.qai.org for the most up to date version of this Listing and to validate that this QAI Listing is active. Questions regarding this listing may be directed to info@qai.org. Please include the listing number in the request.