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WERNER 18 ft Type IA Fiberglass Twin Ladder


The T7418 Fiberglass 18 ft Twin Step Ladder features a duty rating of 300 pounds per side of the ladder. Designed for one or two-person jobs, the T7400 ladders have heavy gauge aluminum tops and feature heavy duty internal spreaders to resist damage around the worksite or in transit. The GLAS*MARK® Violater stripes on the rails make the ladder more visible and the EDGE® bracing system and external rail shields add to the long lasting durability of these ladders. Fiberglass rails are non-conductive for working near electricity.


  • Heavy gauge aluminum extruded top with thick side plates
  • Back-up aluminum plates reinforce all top connectors
  • Shoulder bolt and lock nut on top hinge; 4 solid aluminum rivets attach top to each rail
  • Slip-resistant TRACTION-TRED® steps are double riveted and knee-braced
  • Extra heavy duty internal aluminum spreaders
  • Rubber step bumpers to resist damage
  • EDGE® bracing system helps to decrease damage to rail
  • GLAS*MARK® Violator stripes on rails allow ladder to be more visible
  • Aluminum external rail shield helps protect against abrasion damage
  • Shoe pads riveted to the EDGE® structure
  • Every rivet backed up by metal, metal plates or washer to protect rails
  • Design for one or two-person jobs
  • Maximum load per side, including person and materials, shall not exceed duty rating of ladder


18 ft
Reach Height
22 ft
Max. Standing Height
15 ft 4 in
Edge Bracing
Load Capacity
300 lbs
Type IA Duty Rating
Approx. Width
46 in
Approx. Spread
136-1/8 in
With Pail Shelf
Spreader Material
Front Rails Dimension
3-1/8 in
Rear Rails Dimension
3-1/8 in
Front Flange Dimension
1-3/16 in
Top Dimension
8-1/4 in x 14-1/2 in