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Products > Climbing-Equipment > Stepladders > T370 Series > T378 8 ft Type IA Aluminum Twin Ladder

T378 T378 T378 T378



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T378 8 ft Type IA Aluminum Twin Ladder

Performance Overview

StyleSizeReach HeightLoad CapacityTypePerformance Rating
Twin8 ft12 ft300 lbsType IA Duty Rating

The T378 Aluminum Multi-use Twin 8 ft Step Ladder has a large aluminum extruded top and features a duty rating of 300 pounds per side making these ladders ideal for one or two-person jobs. The slip-resistant TRACTION-TRED® steps on the front and rear sections are all double riveted. Heavy duty aluminum brackets hold the slip-resistant foot pads.


  • Twin sided ladder design for one or two-person jobs
  • Maximum load per side, including person and materials, shall not exceed duty rating of ladder
  • Large aluminum extruded top with thick side plates
  • Slip-resistant TRACTION-TRED® steps on front and rear sections
  • Heavy duty internal spreaders
  • Step braces on top step and bottom three steps
  • Heavy duty aluminum foot bracket with slip-resistant foot pad


FeatureSize / Details
Size8 ft
Reach Height12 ft
Max. Standing Height5 ft 9 in
Load Capacity300 lbs
TypeType IA Duty Rating
Performance Rating
Approx. Width28-1/4 in
Approx. Spread64 in
With Pail ShelfNo
Spreader MaterialAluminum
CertificationsANSI A14.2 (2007); OSHA
Approx. Cu. Ft. Per Unit8.2
Approx. Shipping Wt. Lbs.31

Package Contents

Part NumberQtyDescription


Top Dimension8-1/4 in x 14 in
Front Rails Dimension3 in
Front Flange Dimension7/8 in
Rear Rails Dimension3 in
Rear Flange Dimension7/8 in
Steps Dimension3 in

Additional T370 Series Models

Model No.SizeReach HeightMax. Standing HeightApprox. WidthApprox. SpreadApprox. Cu. Ft. Per Unit
T31010 ft14 ft7 ft 9 in31-3/4 in78 in11.1
T3744 ft8 ft1 ft 11 in21-1/4 in36 in3.5
T3766 ft10 ft3 ft 10 in24-3/4 in50 in5.7
T3788 ft12 ft5 ft 9 in28-1/4 in64 in8.2

(1 Question : 1 Answer)

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T378 8 ft Type IA Aluminum Twin Ladder
1 answer

Are the rivets Aluminum as well?

Customer avatar
Lee's Summit, MO, USA
10 months ago
Customer avatar
Lee's Summit, MO, USA
Age: 35-44
Gender: Male
I want to use it in my MRI room. I need it to be entirely non-ferrous.
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The rivets are steel.
10 months ago
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Read all my Q&A
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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.