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Werner 4 ft. H Fiberglass Platform Ladder Type IA 300 lb. capacity

Engineered for electricians, maintenance pros, and serious DIYers, the Werner 4 ft. H Fiberglass Platform Ladder Type IA is a purpose-built tool that combines height, safety, and p…

Werner MPN RS1A04 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $125.99. Our online price is $139.99.
$139.99
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About Product Overview

Engineered for electricians, maintenance pros, and serious DIYers, the Werner 4 ft. H Fiberglass Platform Ladder Type IA is a purpose-built tool that combines height, safety, and practical workspace in one compact package. Its non-conductive fiberglass rails shield you from electrical hazards, while the sturdy aluminum rungs deliver dependable footing and long-lasting durability.

Why this ladder stands out

  • Non-conductive fiberglass rails for safe work around live wires and electrical components, meeting ANSI and OSHA expectations for electrical tasks.
  • Type IA rating (300 lb capacity) supports you plus tools and materials, giving you confidence on busy job sites.
  • Top work platform creates a stable mini-workbench at height, ideal for handling screws, testers, drills, or small parts without constantly moving tools up and down.
  • Rung material: aluminum provides lightweight strength and smooth stepping, while the fiberglass rails prioritize safety and insulation.
  • Foldable and portable design enables easy storage in tight spaces, with a compact storage width of 21 inches and a shallow 4-inch depth.
  • Weather resistant construction means this ladder performs reliably indoors and in outdoor or damp environments.
  • Stable by design with a base spread of 29 inches, helping prevent tipping on uneven floors or work surfaces.
  • Compact height and thoughtful dimensions—4 ft ladder height with a reach height of up to 8 feet, plus a 12-inch step rise and 3-inch tread depth for comfortable, secure foot placement.

Ideal use cases

  • Electrical panel work, ceiling lighting installations, and panel wiring where insulation is essential.
  • HVAC maintenance, ceiling access, and duct inspections that require a stable surface above ground level.
  • General indoor maintenance tasks like drywall patching, cabinetry adjustments, and appliance service in tight rooms.
  • Any job where you need a portable, safe elevated workspace without sacrificing electrical safety or tool access.

Practical tips for best results

  • Place the ladder on a flat, level surface and fully extend the base for maximum stability; avoid soft or uneven floors.
  • Use the top platform as a small working surface; keep frequently used tools in the tray to minimize climbs and descents.
  • Respect the 300 lb capacity by accounting for you plus tools and materials; don’t exceed the limit.
  • Follow safe climbing practices: maintain three points of contact and avoid leaning beyond the ladder’s rails.

Specifications at a glance

  • Brand: Werner
  • Ladder type: Platform ladder
  • Reach height: 8 ft
  • Height (ladder): 4 ft
  • Weight: 12.6 lb
  • Base spread: 29 in
  • Storage width x depth: 21 in x 4 in
  • Steps: 2
  • Step depth: 3 in
  • Tray/work platform: Yes
  • Foldable: Yes
  • Weather resistant: Yes
  • Rung material: Aluminum
  • Ladder material: Fiberglass
  • Certifications: ANSI and OSHA

The Details Specifications

Brand Werner
SKU 1039107
UPC 051751152326
Unit 0
Case Pack Quantity 1 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 4 × 21 × 52
Weight 13 lbs
Cubic Feet 2.48568 ft³
Country of Origin MEXICO
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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