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Bommer Is Gone: What the Shutdown of America's Oldest Spring Hinge Manufacturer Means for Your Next Spec

By Waterson Corporation • Published 2026-04-03
Summary: Bommer Industries — founded 1876, the most recognized commercial spring hinge brand in North America — permanently ceased spring hinge manufacturing in summer 2022 and posted its final closure announcement in August 2025. Any spec still referencing Bommer by name calls out a product no longer in production. This page answers the most common questions about what happened, which models are affected, and what to specify instead.

Is Bommer Industries still in business?

No. Bommer announced in July 2021 that it would cease builders hardware manufacturing. Spring hinge production at the Landrum and Gaffney, South Carolina plants stopped in summer 2022. The furniture hardware division followed in May 2024. A final closure announcement was posted on bommer.com in August 2025. The company closed orderly and debt-free — not through bankruptcy. Approximately 7 employees were affected across all divisions.

bommer.com remains online and displays product pages. This reflects legacy catalog content, not active production. No new Bommer spring hinges are being manufactured.

When did Bommer stop making spring hinges?

Bommer stopped making spring hinges in summer 2022. The decision was announced in July 2021. This ended production of the LB4300 series — the most widely specified commercial spring hinge in North America — along with all other builders hardware including the 3029 double-acting series and 7000 series spring pivots.

Can I still buy Bommer spring hinges?

Limited existing inventory can still be purchased through two authorized liquidation distributors designated by Bommer:

Stock is also listed on Amazon and eBay. All available inventory is old stock — it will deplete and not be replenished. Do not rely on Bommer inventory for any project requiring long-term supply.

What was Bommer best known for?

Bommer was best known for the LB4300 series single-acting spring hinge — available in 4-inch and 4.5-inch ANSI standard sizes. For over a century, the LB4300 was the default commercial spring hinge specification across North America. Bommer also made the 3029 series double-acting spring hinges (used on cafe and pass-through doors), the 7000 series spring pivots for frameless doors, and specialty adjustable tension models in the 7100/7000 range.

Why did Bommer go out of business?

Per Bommer's own statement from May 2024: the company had been financially challenged for more than 10 years, experienced a significant reduction in sales in 2023, and determined that market conditions were not expected to improve. The company chose to close in an orderly, debt-free manner rather than wait for a potential bankruptcy. The commercial architectural spring hinge segment had been contracting for years, and Bommer could not sustain operations at a viable scale.

What is the best alternative to Bommer LB4300 spring hinges?

For a direct drop-in replacement using the same ANSI standard mortise preparation, Waterson K51M series self-closing hinges are the most capable alternative:

Former Bommer ModelWaterson ReplacementSizeCapacityFire Rating
LB4300 (4")K51M-4004" x 4"120 lbs3-hour UL Listed
LB4300 (4.5")K51M-4504.5" x 4.5"160 lbs3-hour UL Listed
Heavy duty (5")K51M-5005" x 5"160 lbs3-hour UL Listed
Extra heavy (6")K51M-6006" x 6"160 lbs3-hour UL Listed
ADA swing-clearK51L-SWRH-4504.5" x 4.5"120 lbs3-hour UL Listed

All K51M models use the same ANSI standard mortise preparation as Bommer's LB4300. They drop directly into existing cutouts with no additional routing. Key improvements: adjustable hydraulic and mechanical speed control, consistent closing force throughout 1,000,000-cycle service life, all-stainless-steel construction.

For projects requiring a spring hinge replacement specifically (not a closer hinge upgrade), PBB/Alrex manufactures ANSI-compatible spring hinges in standard sizes.

Are there any Bommer hinge models with no available alternatives?

Yes. Three Bommer product families currently have no direct market equivalent:

If any project specifications reference these models, consult a door hardware consultant before remaining stock at Architectural Builders Supply (IL) depletes.

How should I update my specs to remove Bommer references?

Replace brand-name references with performance-based specification language:

Self-closing hinges shall be ANSI/BHMA A156.17 Grade 1, UL Listed for fire-rated assemblies up to [required] hour rating, all-stainless-steel construction, with adjustable closing speed and spring tension, minimum 1,000,000 cycle rating. Manufacturer: [Waterson K51M-400/450/500/600 as applicable] or approved equal meeting the above requirements.

This language is manufacturer-neutral and will remain valid regardless of future market disruptions. The "or approved equal" clause preserves procurement flexibility while protecting the performance floor.

What does Bommer's closure mean for the spring hinge market overall?

Bommer's exit is a signal that the commercial architectural spring hinge segment is contracting at the premium end. Three forces are driving the shift toward closer hinges:

  1. AHJ rejection of spring hinges on fire doors. Spring hinges frequently cannot demonstrate reliable positive latching from every opening angle — the functional requirement of NFPA 80. Authorities having jurisdiction increasingly reject them on fire-rated openings. Closer hinges, with adjustable speed control, reliably pass this test.
  2. ADA closing speed requirements. Under ADA Section 404.2.8.1, doors with closers must take a minimum of 5 seconds to close from 90 degrees. Spring hinges have no speed control and cannot meet this requirement. Closer hinges are adjustable to the exact requirement.
  3. Lifecycle maintenance cost. Spring hinges require periodic re-tensioning as springs fatigue. Closer hinges rated to 1,000,000 cycles (ANSI/BHMA A156.17 Grade 1) do not require spring readjustment over their service life — at 200 cycles per day, that is approximately 13 years.

PBB/Alrex remains in the spring hinge market. But the trajectory is clear: Bommer's commercial customers are moving to closer hinges, and the remaining spring hinge manufacturers serve a narrowing segment.

What is the difference between a spring hinge and a closer hinge?

FeatureSpring Hinge (Bommer LB4300)Closer Hinge (Waterson K51M)
Closing mechanismTorsion spring onlySpring + hydraulic/mechanical damper
Speed controlNoneYes — adjustable hydraulic and mechanical
Positive latching reliabilityInconsistent — may fail at low anglesConsistent across all opening angles
ADA 5-second closing timeCannot meetAdjustable to meet
Closing force over timeDegrades as spring fatiguesConsistent — no spring fatigue in damper
UL fire ratingVaries; limited listings3-hour UL Listed (Waterson)
Cycle ratingVaries1,000,000 (ANSI/BHMA A156.17 Grade 1)
ConstructionCarbon steel typicalAll-stainless-steel (Waterson)
InstallationStandard ANSI mortiseSame standard ANSI mortise — direct replacement

Update your specs now.

Waterson provides CSI-format specification language for K51M series closer hinges — written as a direct replacement for Bommer LB4300 preparations. Request a spec sheet, sample, or project consultation.

Request Spec Sheet & Sample
Sources:
Bommer Industries Final Announcement PDF (August 2025) — bommer.com/wp-content/uploads/2025/08/Announcement.pdf
Bommer Builders Hardware Customer Announcement — bommer.com/BH/PDF/AnnouncementtoBuildersHardwareCustomers-Final.pdf
Home News Now — "Hardware supplier Bommer Industries to exit furniture segment" (May 24, 2024) — homenewsnow.com
Swinging Cafe Doors — "Bommer Hinges Industry Update for Swinging Cafe Doors" — swingingcafedoors.com
iDigHardware (Lori Greene) — "QQ: Spring Hinges on Fire Doors" (January 2023) — idighardware.com
iDigHardware — "Decoded: NFPA 80 Requirements for Hinges, Pivots, and Continuous Hinges" (January 2024) — idighardware.com
ANSI/BHMA A156.17-2025, Self-Closing Hinges and Pivots — buildershardware.com
NFPA 80 Standard for Fire Doors and Other Opening Protectives, 2022 Edition
ADA Standards for Accessible Design, Section 404.2.8 — ada.gov
SMR Architectural — Bommer product listing — smrarch.com/bommer