Ladder Accessories Factory
Fixed Ladder Wells.
Wells built with your ladder — same factory, same dimensions, 27–30 in clearance. OSHA 1910.27 & 1917.118 ready, calcs with every order.
Well Enclosure
Rung Load
85-100μm Coating
Standard Height
Well Design
Fixed Ladder Well
A fixed ladder well is the guarded opening or enclosure that surrounds the ladder where it passes through floors and landings. We fabricate the well with your ladder so the dimensions come from one drawing, not two vendors.
27–30 in clearance
Well opening sized per OSHA 1910.27 so the climber has full reach without pinch points.
Well + rest platform
Rest platforms integrated into the well run at the interval your local code requires.
Cage-style well enclosure
Full-height guarding option built from Φ700 mm cage hoops and rails.
Same factory, same fit
Well, ladder, cage and gate come as one engineered assembly.
Your opening, your dims
Send your well opening size — the quote comes back in 24 hours.
Fixed Ladder Well Specifications & Dimensions
| Well Specification | Standard Range | Custom |
|---|---|---|
| Well clearance | 27 – 30 in (686 – 762 mm) | Per opening |
| Depth from rung center | 7 in min | Per project |
| Width between rails | 16 – 19 in | Custom width |
| Well enclosure | Cage-style, Φ700 mm | Full panel guard |
| Rest platforms | Per local code interval | Engineered spacing |
| Material | Q235B / SS304 / SS316 | Per environment |
| Finish | HDG 85 – 100 μm | Pickled / painted |
| Fall protection | Well + cage | Well + PFAS |
OSHA 1910.27 & 1917.118 well dimensions are verified on every drawing — DoC and calcs ship with the order.
Factory-Direct Pricing
Factory-Direct Pricing & 24h Quote
Wells are priced with the ladder — one engineering set, one production run, one freight bill.
Custom quotation priced by weight & process. Industry reference: caged ladders ≈ USD 899–1,099/ton.
Well Compliance
Compliance & DoCumentation (OSHA/BS 4211/EN ISO 14122-4)
- OSHA 1910.27 — Well Rule
- OSHA 1917.118 — Marine Terminals
- ANSI A14.3 — Well Clearance
- BS 4211 / EN ISO 14122-4
- AS 1657 — Australian Compliance
Documentation Package
Every well order ships with complete documentation — no extra cost, no paywall.
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Declaration of Conformity (DoC)
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Material Test Certificates — EN 10204 3.1
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Structural Calculations
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Welding Procedure Specifications
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Surface treatment certificates (HDG per ISO 1461)
Well Options
Wells For Fixed Ladders Options & Configurations
Wells come in three build families — pick the enclosure and finish that matches your ladder.
Galvanized Well
Q235B with 85–100 μm HDG — the standard well for industrial floor penetrations.
Common questions
OSHA 1910.27 and 1917.118 govern well dimensions for fixed ladders, and BS 4211 or EN ISO 14122-4 apply on UK/EU projects. We build to whichever standard your spec names and record it in the DoC.
Q235B with hot-dip galvanizing (85–100 μm per ISO 1461), SS304 or SS316 — matched to your ladder so the enclosure and the climb share one material and finish.
Yes — solid-sided wells limit airflow, so we add vents to the panel layout per spec. Cage-style hoop and bar enclosures stay open by design; the drawing review confirms which you need.
Send your well opening size and ladder height — engineers return an itemized quote in 24 hours, free of charge. Production runs 15–25 working days after drawing approval.
A Declaration of Conformity, MTC 3.1 material certificates and structural calculations — included with every well order, referencing OSHA 1910.27 or 1917.118 as specified.
Fixed Ladder Wells
Fixed Ladder Wells — 27–30 in Clear Enclosure
A ladder well is the enclosure that surrounds the climb — and its inside width is regulated. We build wells to 27–30 in (686–762 mm) of clear climbing space, with rest platforms on long routes.
Well Specifications
| Parameter | Standard value |
|---|---|
| Inside width | 27 – 30 in (686 – 762 mm) |
| Minimum required | 27 in (686 mm) — OSHA well rule / ANSI A14.3 |
| Enclosure | Solid panels or cage-style hoops and bars |
| Rest platforms | Max 150 ft (45.7 m) between platforms |
| Rungs inside well | Φ20 mm at 280 mm pitch, 500 mm clear |
| Material | Q235B HDG / SS304 / SS316 |
| Fall protection role | Well counts as fall protection on legacy ladders |
Well vs Cage — What Differs
| Feature | Well | Cage |
|---|---|---|
| Enclosure | Closed sides, 27–30 in clear | Open hoops, Φ700 mm |
| Clearance | Defined by inside width | Defined by hoop diameter |
| Typical use | Shafts, chimneys, enclosed routes | Tanks, silos, exposed walls |
| Ventilation | Limited — add vents per spec | Open by design |
| Rest platforms | Required on long climbs | Per height rule |
A well built with the ladder means one supplier, one set of dimensions, one documentation pack — enclosure, rungs, platforms, and access hatch all coordinate on the same drawing. Minimum inside width stays 27 in; we build to 27–30 in so a harnessed climber fits comfortably.
Fixed Ladder Wells — FAQ
A well is the enclosure surrounding a fixed ladder — closed sides with 27–30 in of clear inside width, often with rest platforms on long climbs.
27 in (686 mm) is the minimum required; we build 27–30 in of clear width so climbers — including those in a harness — have full clearance.
Yes — on legacy ladders a well is accepted fall protection above 24 ft, alongside cages; new ladders above 24 ft need a PFAS or ladder safety system.
No more than 150 ft (45.7 m) apart on long climbs; we also fit intermediate platforms at project-specified heights.
Yes — the enclosure is fabricated to the ladder's geometry and bolted or welded around it, with the same material and finish as the ladder.
Proven in real facilities
Reference projects are shown by industry, country and scale. Client names are available on request with approval.
National utility projects — 15+ countries
23 documented projects, 2021-2025 · 2025
All standardsEnergy & industrial clients — Global
500+ projects since 2004 · 2004-2025
Full compliance docsLargest single order — Malaysia
60 units in one project · 2021
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Talk to an Engineer
Free drawing review. Itemized quote in 24 hours. No obligation.
Why Work With Dengtai?
Full Compliance Docs
DoC, MTC, structural calcs included free.
24-Hour Quote
Engineering review + itemized quote within one day.
Global Delivery
8–12 containers/month. VCI + ISPM 15 packaging.
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Related Fixed Ladder Well Pages
Explore accessories, platform configurations, and standards.
Fixed Ladder Guards
Cage hoops and exit guards matched to your ladder
Fixed Ladder Rungs
20 mm rungs at 280 mm pitch, replacement rungs
Swing Gates for Fixed Ladders
Self-closing gates per OSHA 1910.23(a)(2)
Fixed Ladders with Platform
Rest platforms & walk-thru configurations
Fixed Ladder Standards
OSHA 1910.27 & 1917.118 well reference
Talk to an Engineer
Free well drawing review in 24 hours