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T378AS 8 ft Type IA Aluminum Twin Ladder

Performance Overview

StyleSizeReach HeightLoad CapacityType
Twin8 ft12 ft300 lbsType IA Duty Rating

The T378AS Aluminum Multi-use Twin 4 ft Step Ladder has a large aluminum extruded top and features a duty rating of 300 lbs 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
  • External PINCH-PROOF™ spreaders
  • Step braces on top step and bottom five steps
  • Heavy duty aluminum foot bracket with slip-resistant foot pad


FeatureSize / Details
Size8 ft
Reach Height12 ft
Maximum Standing Ht5 ft 9 in
Load Capacity300 lbs
Approx. Cu. Ft. Per Unit8.2
Approx. Spread64 in
CertificationsANSI A14.2 (2007); OSHA
Front Flange7/8 in
Front Rails3 in
Approx. Product Width28-1/4 in
Spreader MaterialAluminum
Rear Rails3 in
Top Dimension8-1/4 in x 14 in
TypeType IA Duty Rating

Package Contents

Part NumberQtyDescription



Additional T370AS Series Models

Model No.SizeReach HeightMaximum Standing HtApprox. Cu. Ft. Per UnitApprox. SpreadApprox. Product Width
T310AS10 ft14 ft7 ft 9 in11.178 in31-3/4 in
T374AS4 ft8 ft1 ft 11 in3.536 in21-1/4 in
T376AS6 ft10 ft3 ft 10 in5.750 in24-3/4 in
T378AS8 ft12 ft5 ft 9 in8.264 in28-1/4 in