Series 3000 logo

Access from both sides makes these welded steel ladders ideal for narrow aisle use.

300 lb. load rating.

  • Steps are 7″ deep and the platform is 20″ deep.
  • Spring-loaded swivel casters.
  • Gray powder coat finish is standard
  • Series 3000 ladders meet applicable OSHA and ANSI standards.
  • CAL-OSHA models also available.



RML Series 1000 Tube
  • All tube members are 1” steel tube construction.
  • All welded construction.
  • Gray Powder coat is the standard finish.
RML Series 1000 Welds

8 stairway tread support welds per step, for a stronger, longer lasting, and safer ladder.

Multiple Tread OPTIONS

Cotterman® offers a variety of tread types to suit your needs. So, no matter what environment your ladder will be in, we have a tread that will offer the optimal grip.

RML Series 1000 Tread Serrated

cotterman UnaGrip Logo  (A3)

RML Series 1000 Tread Expanded

Expanded Metal (A1)

Open step design prevents debris buildup.


Series 3000 ladders are available in 16″ and 24″ wide treads.

RML Series 1000 tread 16

16″ Tread Width

RML Series 1000 Tread 24

24″ Tread Width

On The Ground

Caster 3000 Series

2-5 Step Spring-Loaded Casters

Series 3000 ladders have spring-loaded casters that retract whenever weight is applied. The swiveling casters allow for multi-directional mobility.

Choose Your Series 3000 Ladder Logo

First Thing’s First

First, we need to determine what size ladder you need. One of the most common mistakes made in ordering many ladders is getting them too large for the available workspace. Here are some things to consider before ordering your new ladder:

Rolling Metal Ladders FTF

A: Working Height

is the approximate height that you would like to be able to comfortably reach. It is usually calculated at 5.5′ above the ladder’s platform height.

B: Overall Height

is VERY important. You want to be sure that your ladder will not be too tall to fit into your workspace. This includes being able to fit through any doors that you may need to move it through, or under any ceilings or fixtures that you may have.

C: Top Step Height

is the measurement of the top step from the ground. It’s important that this measurement is not too far above or below your desired working height.

D: Base Width

is also very important because as ladders get taller, the base width increases. It is important to be sure that the ladder will not be too wide for your workspace. We offer different tread widths to accommodate most work areas.

E: Base Length

is the measurement of how long the base of the ladder runs. This is dependent upon the height of the ladder. The taller the ladder, the longer the base. Also lower climb angles increase base length.

*Options such as deeper top steps are available, and will increase the base length. Top steps are available in 10″ – 12″(standard), 20″ – 24″, and 30″.

Product Selection Guide

Our NEW Product Selection guide can assist you in choosing the correct ladder for your application. Once you find the ladder that has the correct dimensions for you, just select the red model number, we’ll then ask you to select your tread type, tread width and platform depth. After that we’ll show you the model number(s) that is the best fit for your use.

Description Top Step Height Overall Height Working Height Short Part Number
3 Step Steel Dual Access Rolling Metal Ladder 30 20 96 3002N
3 Step Steel Dual Access Rolling Metal Ladder 30 30 96 3003N
3 Step Steel Dual Access Rolling Metal Ladder 30 60 96 3003R
4 Step Steel Dual Access Rolling Metal Ladder 40 40 106 3004N
4 Step Steel Dual Access Rolling Metal Ladder 40 70 106 3004R
5 Step Steel Dual Access Rolling Metal Ladder 50 80 116 3005R
6 Step Steel Dual Access Rolling Metal Ladder 60 90 126 3006R

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