English [Español]
United States [Change]
Products > Climbing-Equipment > Stepladders > 370 Series > 378 8 ft Type IA Aluminum Step Ladder > 378

Product Image


  •  View 370 Series Page
  •  Series Comparison
  •  Replacement Parts
  • Share
  •  Email page | Print this page

Complementary Products

You May Also Consider

378 8 ft Type IA Aluminum Step Ladder

Performance Overview

StyleSizeReach HeightLoad Capacity
Single-Sided8 ft12 ft300 lbs

The 378 Aluminum 8 ft Step Ladder has a duty rating of 300 pounds yet is lightweight and easy to transport. The TOOL-TRA-TOP® has a drill holster, convenient tray for tools/paint and small parts. There is also a sturdy molded paint can hanger on the backside of the top. The SPILL-PROOF® pail shelf has a rag rack and holds a gallon paint can and automatically closes with the ladder. There is a full set of horizontals on the rear section. The TRACTION-TRED® steps are slip resistant and double riveted.


  • TOOL-TRA-TOP® with drill holster, convenient tray for tools/paint and small parts
  • Sturdy SPILL-PROOF® pail shelf with rag rack holds gallon paint can and automatically closes with ladder
  • Sturdy molded paint can hanger on back of top
  • Top step and bottom three steps braced
  • External PINCH-PROOF™ spreaders
  • Full set of rear horizontals spaced one per foot
  • Double riveted slip-resistant TRACTION-TRED® steps
  • Heavy duty aluminum bracket with slip-resistant foot pad


FeatureSize / Details
Size8 ft
Reach Height12 ft
Max. Standing Height5 ft 9 in
Load Capacity300 lbs
Approx. Product Width26-1/2 in
CertificationsANSI A14.2 (2007); OSHA
Approx. Spread54-1/4 in
Spreader MaterialAluminum
Approx. Shipping Weight Lbs.22.5
Approx. Cu. Ft. Per Unit5.1
Description of Top FeaturesPaint tray slot, can hook, 3 tool holes, drill hole, pint, quart & gallon paint can, parts tray
Performance Rating

Package Contents

Part NumberQtyDescription


Top Dimension5-1/8 in x 12-1/8 in
Front Rails Dimension3 in
Front Flange Dimension7/8 in
Rear Rails Dimension1-1/4 in
Rear Flange Dimension1 in
Steps Dimension3 in

Additional 370 Series Models

Model No.SizeReach HeightMax. Standing HeightApprox. Product WidthApprox. SpreadApprox. Shipping Weight Lbs.Buy Online
31010 ft14 ft7 ft 8 in30 in66-1/2 in31
3733 ft7 ft1 ft17-3/4 in23-3/8 in9
3744 ft8 ft1 ft 11 in19-1/2 in29-1/2 in11
3755 ft9 ft2 ft 10 in21-1/4 in35-3/4 in13.5
3766 ft10 ft3 ft 10 in23 in41-7/8 in15.5
3788 ft12 ft5 ft 9 in26-1/2 in54-1/4 in22.5

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.