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Products > Climbing-Equipment > Stepladders > E7400 Series > E7412 12 ft Type IA Fiberglass Extension Trestle Ladder > E7412

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E7412 12 ft Type IA Fiberglass Extension Trestle Ladder

Performance Overview

StyleSizeReach HeightLoad Capacity
Extension Trestle12 ft16 ft300 lbs

The E7412 Extension Trestle 12 ft Ladders has a 300 pound duty rating per side and is designed for one or two-person jobs. The slip-resistant TRACTION-TRED® extra wide steps are knee-braced and double riveted. A spring-loaded locking mechanism makes maneuvering the extension trestle easy. The nylon-coated guide sleeves assure minimum friction and wear and also increase the ease of operation. External rail shields and the EDGE® bracing system help protect the rails. Fiberglass rails are non-conductive for working near electricity.


  • Center section extends for access above drop ceilings or to support stages
  • Slip-resistant TRACTION-TRED® round rungs
  • Extra heavy duty internal spreaders
  • Nylon coated guide sleeves assure minimum friction and wear, and increase ease of operation
  • Spring loaded locking mechanism holds center section securely in place
  • Slip-resistant TRACTION-TRED® extra wide steps are knee-braced and double riveted
  • Shoe pads riveted to the EDGE® structure
  • Shoe with rubbertread and protective rail shields
  • Aluminum external rail shield helps protect against abrasion damage
  • EDGE® bracing system helps to decrease damage to rail
  • Design for one or two-person jobs
  • Maximum load per side, including person and materials, shall not exceed duty rating of ladder


FeatureSize / Details
Size12 ft
StyleExtension Trestle
Reach Height16 ft
Max. Standing Height9 ft 7 in
Load Capacity300 lbs
Approx. Product Width41 in
CertificationsANSI A14.5 (2007); OSHA
Approx. Spread95-7/8 in
Edge BracingHeavy
Spreader MaterialSteel
Approx. Overall Ladder Height (Open)228 in
Approx. Shipping Weight Lbs.113.5
Approx. Cu. Ft. Per Unit28.3
Performance Rating

Package Contents

Part NumberQtyDescription


Rear Rails Dimension3-3/16 in
Rear Flange Dimension1-3/16 in

Additional E7400 Series Models

Model No.SizeReach HeightMax. Standing HeightApprox. Product WidthApprox. SpreadApprox. Overall Ladder Height (Open)Buy Online
E74088 ft12 ft5 ft 9 in34 in67-3/4 in120 in
E741010 ft14 ft7 ft 8 in37-2/5 in81-7/8 in180 in
E741212 ft16 ft9 ft 7 in41 in95-7/8 in228 in
E741414 ft18 ft11 ft 6 in44-1/2 in109-3/4 in264 in
E741616 ft20 ft13 ft 5 in48 in123-3/4 in312 in

I have a e7412 ladder and need to get a pair of foot levelers. What do you have that will do the job for me with this ladder?

The floor is slanted so the center point of the ladder is on a slant. I want to level the ladder so that it's straight. I've been using 2 X 6's on the lower section as wedges but don't like that at all. Can you help?
Asked by: RD
Unfortunately we do not manufacture any leg levelers for the E7400 series of ladder. Our leg levelers only fit specific models of extension ladders.
Answered by: Werner Customer Care
Date published: 2015-06-19

Is stradling the extension part of the ladder excepible by OSHA standards for fire protection pipe fitters.

I have always stradled the extension on these ladders in order to have two hands to work with . I was told by a safty director of a general contractor that we were not allowed to do this according to OSHA standards of lader use. Any help in clarifying this matter would be great help.
Asked by: Pipe fitters
Unfortunately no. You cannot straddle the extension section or the stepladder section on the E7412 per OSHA. You need to always maintain 3 points of contact when using ladders. The E7400 ladder follows the same rules as an extension and stepladder.
Answered by: Werner Customer Care
Date published: 2015-08-13

what is the working height for one person?

The specs call for a working height of 9' 7". I assume this is for two people on the A frame. What is the working height for one person using the extension? What does the label say, and are these ladders OSHA approved?
Asked by: Chuck
The 9'7" working height does refer to just the base or A frame portion of the ladder. When the trestle is fully extended, it reaches 19 feet. The maximum working height on the trestle is 17 feet.
Answered by: Werner Customer Care
Date published: 2015-05-01

How high can I climb on this ladder without having to be tied off

Asked by: Kyle Harvey
All four ladder feet should be set on a firm level ground with the spreaders locked in the open position. It is not required to tie off the ladder, as the ladder should be used on a secure ground. If the ladder is being used on a slippery surface, then the ladder should be secured from movement.
Answered by: Werner Customer Care
Date published: 2015-08-27

Is this the correct ladder for me?

1 )We have a 12ft. grid ceiling. I have an A/C unit 3ft above the grid ceiling. It is about 2ft high. So we need a working height of 13-15ft from the floor. Will this ladder work for us? 2) I read the comments bout utilizing the center mast. 30+ yrs ago. we had a very heavy wooden ladder of this type. We would climb to the top of the center mast, throw our leg over the top and into the 2nd. rung from the top. If I choose to do this, does this ladder have the stability of its wooden counterpart?
Asked by: Stupid
We would not suggest using the E7412 for the application you described. We would suggest using the PD6204.
Answered by: Werner Customer Care
Date published: 2016-04-03

How do you raise and lower the center ladder?

Asked by: JT
To raise and lower the extension section, first the base portion of the ladder needs to be fully opened with the spreaders locked in place. Then the extension portion can be raised by pushing or pulling upward. The ladder will lock at any desired rung. The ladder has a locking mechanism, similar to a gate style, that will secure at any height. To lower the section, first raise the extension about six inches, and release the lock. Lower the ladder to desired height and engage the lock again.
Answered by: Werner Customer Care
Date published: 2015-05-01

what does Max. Standing Height mean

Asked by: Anonymous
Max standing height with be the height that your feet will be when at maximum working length. This is the highest point you are allowed to stand on the ladder.
Answered by: Werner Customer Care
Date published: 2016-10-24

need OSHA approved ladder. Fiberglass

What I really need is a six foot step ladder, however a regular six foot ladder will not fit in my vehicle. Do you sell a ladder that will fold down, but is in fiber glass?
Asked by: walt
We currently do not manufacture a compact 6ft fiberglass step ladder.
Answered by: Werner Customer Care
Date published: 2016-09-27

Can the trestle part of the ladder be removed to make a 16' stepladder?

Asked by: BJS
The extension trestle section cannot be removed from the ladder. The ladder can be used without extending the trestle section to be used as just a twin sided step ladder.
Answered by: Werner Customer Care
Date published: 2015-05-01

How high can a person stand and work on this ladder?

Do they need to stop 2 steps down from the knuckle of the A frame or 2 steps down from the top of the extension. In what conditions can 2 people work on the ladder and at what height?
Asked by: Jed Baked
The extension trestle ladder has a variety of acceptable uses. When using the ladder as a step ladder or a twin step ladder, the user cannot climb above the highest labeled step stating where the user can climb. This is the same rule with a step ladder. One user can climb on each side of the ladder, but only the A frame portion, not the extension. A single user may climb the center extension portion of the ladder, following the labels for the maximum allowable height.
Answered by: Werner Customer Care
Date published: 2016-01-27
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Different types of ladders are designed to keep you safe and productive when climbing or standing. Using the wrong style of ladder or simply ignoring the limitations of climbing equipment can result in a fall or serious injury.
Height is referring to the actual ladder height. Extension ladders should be 7 to 10 feet longer than the highest support or contact point, which may be the wall or roof line. The highest standing level is four rungs down from the top. The highest permitted standing level on a stepladder is two steps down from the top.

Reach height is the maximum reach assuming a 5’6” person with a vertical 12” reach.
Ladders are designed to safely hold up to a specific amount of weight. The Werner Performance System defines five different capacities using a color and star rating system. The Duty Rating is defined as the maximum safe load capacity of the ladder. A person’s fully clothed weight plus the weight of any tools and materials that are carried onto the ladder must be less than the load capacity.

Werner offers ladder made from fiberglass and aluminum. Each material has characteristics which make it best for certain applications, or one material may simply fit the personal preferences of the user. For example, if working around electricity users should select fiberglass products due to their non-conductive side rails.