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Products > Climbing-Equipment > Fire Escape Ladders > ESC Series > ESC330 3-Story Built-In Fire Escape Ladder

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ESC330 3-Story Built-In Fire Escape Ladder

Performance Overview

SizeLoad Capacity
24 ft 8 in1200 lbs

The ESC330 is a 3-story built-in fire escape ladder that installs permanently under a window making it always available if ever needed. Deploys in seconds for a quick escape. Supports up to 1200 pounds and is easy to use. The rungs are anti-slip and have standoffs for ease in descending. The climbing assist strap aids in exiting the window. EVERY SECOND COUNTS, ESCAPE FASTER™.


  • Blends with room decor
  • Storage pan permanently installs in wall
  • Climbing assistance strap
  • Anti-slip rungs and standoffs
  • Door included with unit
  • Permanent installation always there when you need it
  • Deploys in seconds easy to use
  • Faster escape supports up to 1200 lbs
  • The pan size is 11 inch Height x 15-1/4 inch Width x 3-1/2 inch Depth


FeatureSize / Details
Size24 ft 8 in
Load Capacity1200 lbs
Load Capacity per Step400 lbs

Package Contents

Part NumberQtyDescription


Storage Pan Height11 in
Storage Pan Width15-1/4 in
Storage Pan Depth3-1/2 in
Distance Between Steps14-1/4 in

Additional ESC Series Models

Model No.Size Buy Online
ESC22017 ft 2 in
ESC33024 ft 8 in

Do you ship to the UK?

Hi do you ship to the Uk or do have an online partner that will ship to the UK? Thanks Jon
Asked by: Anonymous
Please contact uk.customercare@wernerco.com
Answered by: Werner Customer Care
Date published: 2017-06-16

Can the unit be mounted in an exterior wall? Will it rust?

I have a half wall as a deck rail. I would like to mount the unit in that wall and simply throw it over the rail in case of emergency. I am concerned that the storage box might rust.
Asked by: Anonymous
The fire escape ladder should be mounted inside of the home, below the window opening. The door assembly is made from wood and not recommended to be store outside. From the mounting point inside of the pan to the first step of the ladder, there are 42 inches of length of materials. This to allow the first step to be in the proper position when the ladder is installed inside.
Answered by: Werner Customer Care
Date published: 2015-06-29

Can this ladder be mounted in the floor?

Can this ladder be inset into the floor under a window?
Asked by: Anonymous
Proper installation requires studs must be 16" center to center for proper installation. Proper placement of the ladder requires installing the metal pan mounted beneath the window approximately 5-6 inches from the bottom of the window opening, between the window apron and baseboard moldings. We do not suggest mounting this fire escape into the floor under a window. This is something that we have not tested and cannot suggest using for safety purposes.
Answered by: Werner Customer Care
Date published: 2015-08-20

Can the ladder be reused?

I'd like to do a fire drill once in a while. Can that be done and how often?
Asked by: Anonymous
Yes, the ladder can be reused. During the installation process, it is recommended that once the ladder is mounted in place, the ladder should be cut to length and tested by first standing on the bottom rung. The ladder easily folds again for storage into the wall mounted pan.
Answered by: Werner Customer Care
Date published: 2017-03-03

When my casement windows are opened, there is only 10 inches of opening. Is this sufficient size? What is the minimum opening size of window?

Asked by: Anonymous
The window must open wide enough for a person to be able to safely climb through. Please visit our website at www.wernerfireescapeladder.com for a video on the proper use of the ladder.
Answered by: Werner Customer Care
Date published: 2017-03-03

How long has this been on the market?

If you don't mind me asking I would like to know when and by who this great idea was presented to you and how long its been foe sale?
Asked by: Anonymous
The fire escape ladders have were released for sale towards the end of the year 2009.
Answered by: Werner Customer Care
Date published: 2013-10-22

Is this a one time use ladder?

Would my family be able to practice using this ladder or is it meant for one time use during an actual emergency?
Asked by: Anonymous
The fire escape ladders are designed so that the ladder can be put back into place after use. Included in the instructions are diagrams of how to fold the ladder back into the stowed position. It is stated in the instructions, after the ladder is installed, it should be tested for stability and then stowed back in place.
Answered by: Werner Customer Care
Date published: 2014-12-09

Possible damage to windows below installed ESC330?

An answer to another question you said deploying the ESC330 when there are windows below may damage these windows. Is there any suggested way the ESC330 can be deployed during a drill and not cause damage to windows below?
Asked by: Anonymous
When deploying the fire escape ladders, the ladder may be dropped on or swing towards a window below. Caution should be taken when dropping the ladder so the ladder does not fall towards a window or swing after deployed.
Answered by: Werner Customer Care
Date published: 2017-03-03

What testing has the ESC220 and ESC330 been reviewed under if any?

The local code office is considering allowing the use of these units to replace a deteriorating fire escape and want to know what they were tested under.
Asked by: Anonymous
Please contact our customer care department at 888-523-3370 Monday through Friday 8 AM till 5 PM EST to inquire about the assistance you are seeking. Please have your complete model number and MK/MARK number off of your model number label at the time of your call.
Answered by: Werner Customer Care
Date published: 2016-11-03

Can ladder be used above two screen porches?

My 3rd floor condo has a sunroom that is above screen porches on the 1st and 2nd floors of the building. Because of condo association rules, the sunroom is the only space where I can cut into the wall to install a ladder between the studs. Will the ladder work hanging down beside screens instead of walls on the two lower floors? Also, will the ladder damage the screens on the porches of the lower units if I deploy it to check it as you recommend? If it is likely to damage the screens, would it be okay to install it without deploying it to check it?
Asked by: Anonymous
Unfortunately Werner Co. does not offer a product that would suit your needs. You might try one of websites below for the product you are seeking: www.calvertusa.com www.memphisfoldingstairs.com www.rainbowatticstair.com
Answered by: Werner Customer Care
Date published: 2015-03-23
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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.