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Deal.ai › Werner › Step Ladders
Werner
Werner P378 10 ft Aluminum Platform Stepladder

Werner P378 10 ft Aluminum Platform Stepladder

Best price now

$297.14at Industrial ProductsObserved Nov 8, 2026, 2:20 PM

28% under what the other stores charge

Compared across 5 stores. Prices are checked against each store and labelled with when.

Visit Industrial Products

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Price facts

  • Last seen at $297.14 at Industrial Products on Nov 8.
  • Checked at 5 stores.

Our take on the Werner P378 10 ft Aluminum Platform Stepladder

The Werner P378 is a 10 ft aluminum platform stepladder with an 8 ft design height and a large standing platform, rated to 300 lb. Its standout feature is the built-in safety guardrail, which gives you something to hold at the top and a barrier behind you while you work. It is OSHA compliant and built for one-person jobs, indoors or out. At $297.14 at Industrial Products as of November 8, 2026, it sits at the top of its recent range, with 5 stores listing it new.

Best forOne-person jobs at height, such as painting, wiring and ceiling workHomeowners who want a stable platform and a handhold at the topTradespeople who need an OSHA-compliant ladder on siteOutdoor work where slip-resistant feet matter
Pros
  • Safety guardrail gives a handhold and a barrier at the top
  • Large platform lets you stand and work with both hands
  • 300 lb load capacity handles most users and tools
  • Aluminum frame keeps a 10 ft ladder manageable to move
  • Pinch-proof spreaders lock the ladder open securely
  • OSHA compliant for job-site use
Cons
  • Heavy and bulky to carry and store for a 10 ft ladder
  • Costs more than a plain step ladder of the same height
  • Requires some assembly by the user
  • Guardrail adds height and bulk, so it is harder to fit through doorways

Werner P378 10 ft Aluminum Platform Stepladder prices at every store

  • Industrial ProductsNew

    In stock

    $297.14Observed Nov 8, 2026, 2:20 PM
    Visit Industrial Products
  • Kelseyville Lumber & Supply CoNew

    In stock

    $299.99Observed Nov 8, 2026, 2:20 PM
    Visit Kelseyville Lumber & Supply Co
  • ZoroNew

    In stock

    $412.99Observed Nov 8, 2026, 2:20 PM
    Visit Zoro
  • WeSourceUSANew

    In stock

    $458.88Observed Nov 8, 2026, 2:20 PM
    Visit WeSourceUSA
  • Home DepotNew

    Out of stock

    $196.47Observed Nov 8, 2026, 2:20 PM
    Visit Home Depot

Also available at

  • Ace HardwareCheck price at Ace Hardware
  • Lowe'sCheck price at Lowe's
  • Acme ToolsCheck price at Acme Tools
  • Grainger Industrial SupplyCheck price at Grainger Industrial Supply

Werner P378 10 ft Aluminum Platform Stepladder price history

Lowest price we've seen: $196.47 on Nov 8 at Home Depot. Tracked across 11 stores since Nov 8.

What reviewers say

Owners of Werner platform ladders generally rate the stability and the top platform highly, and the guardrail is a common reason people pick this model over a standard step ladder. Complaints tend to focus on weight and bulk rather than build quality.

What people mention
  • StabilityPraisedOwners say the wide platform and spreaders make it feel solid to stand and work on.
  • GuardrailPraisedThe safety rail is cited as the main reason buyers choose this model over a plain step ladder.
  • WeightCriticisedIt is heavy and awkward to carry for one person, especially fully assembled.
  • StorageMixedThe guardrail and platform make it bulkier to store than a standard step ladder.
  • AssemblyCriticisedSome buyers find the user-installed assembly a chore out of the box.

Specifications

Load Capacity
300 lb
Product Type
Platform ladder
Configuration Type
Platform
Material
Aluminum
Frame Material
Aluminum
Design Height
8 ft
Number Of Steps
8

Questions and answers

Is the Werner P378 tall enough to reach a 10 ft ceiling?
The ladder is 10 ft overall with an 8 ft design height, so the platform sits below 8 ft. Standing on the platform puts your hands well above a 10 ft ceiling, which suits most painting and wiring jobs.
Does it come assembled?
No. Werner lists it as user-installed assembly, so expect to put some parts together before first use.
What is the weight limit?
300 lb, including the user and tools. It is rated for one person at a time.
Is it safe to use outdoors?
Yes. It has slip-resistant feet and is OSHA compliant, and Werner lists outdoor use among its intended environments.
How does it compare with a standard 10 ft step ladder?
You get a standing platform and a guardrail instead of narrow steps, which is more comfortable for longer jobs. The trade-off is more weight, more bulk and a higher price.
When is the best time to buy?
Ladder prices move with seasonal sales and contractor promotions. Track the price history here and compare all 5 stores before buying; $297.14 at Industrial Products as of November 8, 2026 is at the high end of its recent range.
Where is the Werner P378 10 ft Aluminum Platform Stepladder cheapest?
At Industrial Products, for $297.14, 28% under what the other stores charge, as of our latest check.
Where can I buy the Werner P378 10 ft Aluminum Platform Stepladder?
9 stores we checked sell it, including Home Depot, Industrial Products, Kelseyville Lumber & Supply Co, Zoro, WeSourceUSA.

Stores we've priced the Werner P378 10 ft Aluminum Platform Stepladder at

  • Acme Tools deals and prices
  • Grainger Industrial Supply deals and prices
  • Home Depot deals and prices
  • Lowe's deals and prices
  • MSC Industrial Supply deals and prices
  • Stones Ace of deals and prices
  • Zoro deals and prices

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All Werner deals and products →
Rolling Design
No
Design Platform
Yes
Color
Aluminum
Non-Slip Feet
Yes
Locking Mechanism
External Pinch-Proof spreaders
Safety Features
Safety Guard Rail, Slip-resistant foot pad
Safety Rail Included
Yes (safety guardrail)
Safety Standard
OSHA Compliant
Certifications
OSHA Compliant
Environment
Outdoor
Age Range
Adult
Required Assembly Steps
User installed
Construction Type
Double riveted (steps)