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Type Material Top Platform Number of Steps Load Capacity Width Depth Height Top Step Height Diamond PlatingPriceUsually Ships inStocked
Step Ladder316L Stainless Steel20" W x 14" D2 Steps300 lbs20"21.5"24"21"No $3,8981-3 Days Stocked
Step Ladder316L Stainless Steel20" W x 19" D5 Steps300 lbs20"49"81"51"Yes $12,4651-3 Days Stocked
Step Ladder316L Stainless Steel30" W x 14" D2 Steps300 lbs30"21.5"51"21"Yes $4,1801-3 Days Stocked
Step Ladder316L Stainless Steel30" W x 14" D2 Steps300 lbs30"21.5"24"21"Yes $3,6001-3 Days Stocked
Step Ladder316L Stainless Steel30" W x 14" D3 Steps300 lbs30"29"34"31"Yes $4,5831-3 Days Stocked
Step Ladder316L Stainless Steel30" W x 14" D3 Steps300 lbs30"29"61"31"Yes $5,4451-3 Days Stocked
Step Ladder316L Stainless Steel30" W x 19" D4 Steps300 lbs30"41.5"71"41"Yes $7,4531-3 Days Stocked
Step Ladder316L Stainless Steel30" W x 19" D5 Steps300 lbs30"49"81"51"Yes $9,6061-3 Days Stocked
Step Ladder316L Stainless Steel30" W x 48" D5 Steps300 lbs30"78"87"51"Yes $9,4961-3 Days Stocked
Step Ladder316L Stainless Steel18" W x 19" D7 Steps300 lbs26"64"101"71"Yes $13,9481-3 Days Stocked


  • Crevice-free design promotes easy disinfection
  • Compliant with OSHA's Part 1926-1053 safety requirements for Type IA Ladders (300 lb. duty rating)
  • Resistant to alcohol-based cleaners and harsh chemicals
  • During sterilization process, won't produce contaminants
  • Designed for life science applications, such as biofuel research and production and food science
  • Ideal for maintenance work in an ISO 5 - 8 clean room
  • Nylon leveling feet can be adjusted to compensate for uneven floors
  • Safety rails (optional on smaller models) further enhance personnel safety
  • Standard models include perforated steps; alternative designs available for custom ordering
  • The number of steps listed includes the platform
  • All-stainless steel spring-loaded casters with polyurethane wheels retract when weight is applied
  • 0.75" (19 mm)-diameter perforations accommodate vertical laminar air-flow and minimize particle accumulation
  • BioSafe® construction features continuous-seam welds to create surfaces free of cracks that harbor germs
  • Custom sizes and configurations available; call with your specifications!
  • Narrow design accommodates tight space requirements

Ladders, Stairs & Work Platforms

  • Electropolished stainless steel mobile step ladder for cleanroom Electropolished Stainless Steel Mobile Step Ladder for Cleanroom Manufacturing
  • Stainless steel folding step ladder for biopharmaceutical cleanroom Stainless Steel Folding Step Ladder for Biopharmaceutical Cleanroom

Features and Benefits

BioSafe®: Terra's Ultimate Cleanliness Rating

Terra's BioSafe products are designed for the most critical applications: no gaps and crevices where microbes colonize, rounded corners for easy disinfection, won't produce contaminants during sterilization, and exceeds cGMP, IEST, ASTM and ISO 14644-1 requirements.

Hand Rails (Select Models)

OSHA-compliant safety rail extends 30" above the top step; models with extended depth provide convenient work platform.

Convenient Mobility and Safe Stability

All-stainless-steel, non-shedding polyurethane rolling casters, and non-contaminating nylon leveling feet to move and place the ladder with ease. Design free of cracks and crevices where contaminants can collect.

Streamlined Hygienic Design

Compare the continuous-seam weld BioSafe design (left side of each photo) with hard-to-clean cracks of a non-continuous weld model (right side).

Continuous Seams Eliminate Particle Traps

Continuous seam weld design simplifies cleaning. No hard-to-clean cracks, crevices, or partial welds.

Diamond Plating and Perforations

Diamond tread plating and perforations support laminar flow while reducing the risk of slipping. Easy on shoes and easy to clean.

Smooth, Easy-Clean Surfaces

BioSafe stainless steel design minimizes cracks and crevices where microbes collect, doesn't product contaminants during sterilization

All Stainless-Steel Construction

Stainless steel perforated steps help to reduce contaminants and promote air laminarity. Design won't produce contaminants during disinfection, stands up to harsh biocides.

High Caliber Hardware

Seemingly small details like latches, ports, glides and hinges are often overlooked or ignored by other manufacturers, and later become the point of costly recurring maintenance or equipment failure. Terra’s products are made of long lasting, cleanroom compatible, top tier hardware. Individual components are carefully designed and rigorously tested to guarantee the highest quality, durability, and craftsmanship.

OSHA Type 1A Compliant

This product meets OSHA's Type 1A compliance standards

OSHA Portable Stair Compliance

This product meets OSHA's Portable Stair compliance standards

Continuous Product Improvement

At Terra, we strive to develop and produce the highest quality products for our customers to improve health, safety, performance, and yields. Our product quality is enabled by high-grade manufacturing equipment and processes, 45 years of engineering and application expertise, and our commitment to continuously improve.

Popular Accessories

For a full list of accessories, select a product then click Choose Accessories on that product page.
  • Ladder Cover
    Protect step stairs with a nonwoven, cleanroom-compatible polyester cover sized for your step stair.
  • Grounding Chain for Step Stools and Ladders
    12-inch conductive chain attaches to any Terra Step Stool or Ladder to provide ground connection against static discharge.
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