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The 8-Foot Fire Door Testing Gap: Quick Reference

By Waterson Corporation • 2026-04-03 • 5-minute read

ANSI/BHMA A156.17 tests self-closing hinges on a 3'x7' door. NFPA 80 Table 6.4.3.1 stops at 3'x7'. Modern commercial buildings routinely use 8-foot fire doors. There is no standardized test for the gap — only a legal path through manufacturer's published listings.

7 ft

A156.17 test specimen max height

8 ft

Modern commercial door standard height

1M
Cycles — Waterson 8-ft test (UL Listed)

3 hr
Waterson UL Listed fire rating for 8-ft door

The Gap, Explained in 90 Seconds

NFPA 80 Section 6.4.3.1 says hinges shall comply with "individual door and hardware manufacturer's published listings OR Table 6.4.3.1."

Table 6.4.3.1 lists a maximum of 3'0" x 7'0" for spring/self-closing hinges. Nothing above that.

ANSI/BHMA A156.17 (the performance test standard) uses a 3'x7' reference specimen. No test protocol exists for 8-foot doors.

Result: for 8-foot fire doors, the table is empty and the standard has no defined test. The only valid NFPA 80 compliance path is a manufacturer's published listing for the oversized application.

What this means for specs: Specifying "ANSI/BHMA A156.17 Grade 1" does not cover 8-foot fire doors. That certification was earned on a 3'x7' specimen. Your spec must explicitly require the manufacturer to have a published listing for the actual door size in use.

Which Manufacturers Have 8-Foot Listings?

Product Type	8-Foot Listing?	UL Fire Rating
Traditional spring hinges (Trudoor, etc.)	No — explicitly 3'x7' max	Limited
PBB ALREX	No public listing found	UL 10C (180-min)
Waterson	Yes — documented testing on 8-ft specimen, 4 hinges	3-hour UL Listed

Waterson's 8-Foot Test: What Was Actually Done

Test conducted on an actual 8-foot door specimen (not extrapolated)
Four self-closing hinges — matches the installation configuration
A156.17 criteria applied: 1,000,000 cycles, closing force, wear assessment
UL involvement to verify methodology
Result: 3-hour UL Listed fire rating for 8-foot door application
All-stainless-steel construction — no plastic housings, no aluminum components
Weight capacity: up to ~440 lbs with 4-hinge configuration

Spec Language That Works for 8-Foot Fire Doors

Add to your specification: "Self-closing hinges for [8-foot] fire-rated doors shall be UL Listed, minimum 3-hour fire rating. Manufacturer shall provide published documentation confirming testing on a door specimen of [8'0"] or greater using ANSI/BHMA A156.17 methodology with [four] hinges. Provide UL file number or equivalent third-party verification for the oversized door application. Consult local AHJ prior to installation."

AHJ Acceptance: The Bottom Line

There is no universal pre-approval for 8-foot fire door self-closing hinge listings. AHJ acceptance is project-by-project. Consult the local AHJ early. Bring the manufacturer's published listing, test specimen data, and UL documentation to that conversation.

Lori Greene (iDigHardware/Allegion), January 2023:

"If the manufacturer's published listings allow spring hinges to be installed on fire doors larger than 3'-0" x 7'-0", that is acceptable according to NFPA 80 (check your state and local codes for more restrictive requirements)."

Want the full technical breakdown? — Read the complete article →

Specifying 8-foot fire doors? Request Waterson's 8-foot door listing and UL documentation.

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