LadderCage337 lb Rated Safety Cage Ladder
Safety Cage For Ladder
Safety cage ladder — 300 lb rated, galvanized or SS304, custom heights, factory-direct.
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Spec-Driven Safety Cage Ladder
Safety Cage For Ladder
Spec-driven safety cage ladders — 300 lb rated, galvanized or SS304, custom heights. Built to OSHA 1910.28 & EN ISO 14122-4 with full documentation.
Get My Safety Cage Quote| Specification | Value |
|---|---|
| Load Rating | 1.5 kN per rung (≈338 lbs) |
| Rung Diameter | Φ20 mm |
| Rung Spacing | 280 mm (≤300 mm) |
| Clear Width | 500 mm |
| Cage Diameter | Φ700 mm (hoops 40×5 @≤1500, straps 30×3) |
| Cage Start | 2.2 m above floor |
| Galvanizing | HDG 85–100 μm (ISO 1461) |
| Stainless | SS304 / SS316 optional |
| Custom Heights | Up to 25 m single-run; multi-run beyond |
| Standards | OSHA 1910.28 · EN ISO 14122-4 |
Safety Cage Ladder Options
Safety Cage Ladder - 337 lb Rated
Three build options cover every environment — pick by load and corrosion exposure.
337 lb Rated
1.5 kN per rung (≈338 lbs), exceeding the common 300 lb spec. Heavier-duty ratings on request.
Galvanized HDG
Q235B with HDG 85–100 μm per ISO 1461 — the all-round choice for industrial access.
Stainless SS304/SS316
PMI-tested for chemical, marine and food-grade environments. Acid-pickled and passivated.
Custom Heights & Factory-Direct Pricing
Custom Heights & Factory-Direct Pricing
Custom heights, factory-direct pricing with volume discounts, 24h quote and 15–25 day production.
Custom Heights
Any height up to 25 m single-run, multi-run systems with rest platforms beyond that.
Factory-Direct
No distributor markup. Volume discounts and itemized quotes direct from the factory.
24h Quote
Quick quote in 24 hours; production takes 15–25 working days.
500+ Projects Across 50+ Countries
Safety cage ladders delivered for industrial, utility and infrastructure clients worldwide. References are anonymized; ask for sector-relevant case details.
MTC, DoC & Free Dossier
Compliance - MTC, DoC & Free Dossier
Meets OSHA 1910.28 & EN ISO 14122-4 — the full compliance dossier ships with every order at no extra cost.
- DoC — OSHA 1910.28 & EN ISO 14122-4
Declaration of Conformity to the relevant standard
- MTC 3.1 Material Certificate
EN 10204 3.1 for Q235B / SS304 / SS316
- Free Compliance Dossier
DoC, MTC and structural calcs — free with every quote and order
Get a Safety Cage Ladder Quote
Get a Safety Cage Ladder Quote
Tell us your ladder spec, height, quantity and material. An engineer replies within 24 hours — your compliance dossier and quote arrive together.
- 24h itemized quote
- Volume discounts factory-direct
- Free compliance dossier included
The Dimensional Envelope: What Each Number on the Drawing Buys You
A safety cage ladder is a chain of six or seven numbers, and every one of them exists because a standard or a failure mode demanded it. When you compare quotes, compare these numbers — not the headline price — because a 250 mm rung pitch or a 600 mm cage will pass a glance test and fail an audit. Here is what each figure on our standard drawing controls.
| Dimension | Standard value | What it controls | Anchored by |
|---|---|---|---|
| Rung diameter and pitch | Φ20 mm at 280 mm | Boot grip and stride rhythm; proof load 1.5 kN per rung | OSHA 1910.23 general requirements |
| Clear climbing width | 500 mm | Shoulder room with a harness and small tool bag | EN ISO 14122-4:2016 |
| Cage diameter | Φ700 mm | Keeps the body inside the hoop line during a backward slip | EN ISO 14122-4 / BS 4211 |
| Hoop section and spacing | 40×5 mm at 1500 mm | Stiffness of the enclosure between attachment points | EN ISO 14122-4 |
| Vertical straps | 30×3 mm | Distributes impact around the hoop circumference | Shop standard, verified per drawing |
| Cage start height | 2.2 m above base | Open entry for stepping on, enclosure before fall energy builds | EN 3 m and AS 1657 3 m triggers — covered with margin |
These values are recorded on the approval drawing you sign before production, then verified again at trial assembly — so what you approved is what ships.
Follow the Load, Boot to Bolt
Load Path Anatomy: How a Climber's Weight Travels Through a Safety Cage Ladder
A safety cage ladder is a chain of transfers — every kilogram a climber applies walks a fixed path from boot to building, and the cage adds its own branch the instant containment is called upon. Understanding the path is understanding why the dimensional envelope on this page holds the numbers it holds: each number protects one transfer. Trace both paths below and every dimension on your drawing finds its job.
| Transfer | Member Doing the Work | What the Load Tests | Dimension Protecting It |
|---|---|---|---|
| Boot to rung | Φ20 mm bar, every step of the climb | Bending of a single bar under a moving, booted load | 1.5 kN rating per rung at 280 mm pitch |
| Rung to stringer | The two welded joints at each bar end | Weld integrity under millions of small cycles | Welds inspected to ISO 5817 Level C |
| Stringer to standoff | Bracket connections up the wall | Load concentration where the ladder meets the host | Bracket spacing and fixings per the calculation sheet |
| Standoff to structure | Anchor bolts in the substrate | Pull-out and shear at the final interface | Fixing drawing values — torque, type and pattern |
| Torso to strap — the cage branch | 30×3 mm verticals the slip delivers the body to | Containment load entering the barrel wall | Strap continuity around the Φ700 envelope |
| Strap to hoop to stringer | 40×5 mm rings at 1500 mm, tied to the rails | Radial load resisted while the ring stays round | Hoop section and spacing — the wall's stiffness budget |
Both paths are only as strong as the weakest transfer — which is why our five-stage QC walks them with paper: MTC 3.1 for the members, weld records for the joints, trial assembly for the whole chain, photos archived 10 years. Send your climb height and the free dossier quote returns every transfer documented, inside 24 hours.
Repair, Replace or Extend
Reader Decision Guide: What to Do With the Ladder You Already Have
Most safety cage ladder projects start in front of an existing ladder. Three honest routes exist — and only one of them involves buying a complete new assembly. Match your bay to the cards below before requesting the dossier, and the quote you receive will be for the work the load path actually needs.
Repair in place when the path is intact
The bay is traceable, the geometry matched the envelope when surveyed, and the findings are local: a sprung strap, a damaged flare, a gate that lost its spring. Order the parts against the original drawing where one exists, restore the member to spec, log the repair against the inspection baseline. A sound load path deserves maintenance, not replacement.
Replace the assembly when the path is broken
Unknown steel, corroded stringers, hoops no longer round, a cage that starts at the wrong height — these are load-path failures, and welding over them spends money on a structure that still cannot be certified. A new assembly at $95 per metre HDG ships in 15–25 days with the complete dossier; retiring an unverifiable bay is the cheaper decision within one budget cycle.
Extend the system when the duty grew
Sound ladder, new reality: usage rose past daily, the climb now carries a platform obligation at 6 m, or the rule moved above 24 ft on a new US install. Order the extension as a system — platform at $150–400, gate at $60–180, LSS or PFAS line where arrest is owed — so the extended load path is engineered as one chain, not patched into an old one.
Undecided between cards? Photograph the bay end to end and send it in — the free dossier review names the route and prices it, repair parts or new assembly, inside 24 hours.
The Dossier, Delivered With the Steel
What Each Feature Returns Along the Load Path
Five features — each protecting one transfer of the chain.
| Feature | Advantage | Your Outcome |
|---|---|---|
| Engineer-signed calculation sheet | every transfer in the chain computed for your loads | the path is defensible before the first boot lands |
| EN 10204 3.1 MTC per batch | member identity proven along the whole path | no transfer rides on mystery steel |
| Fixing drawing with torque values | the final transfer into your structure specified | anchors deliver what the calcs assumed |
| Trial assembly, photographed | the chain proven end to end before dispatch | site day joins proven members, not hopeful ones |
| Free dossier review of your bay | repair, replace or extend named with evidence | the order matches the load path, not the catalogue |
Safety Cage Ladder FAQ
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