A professional product shot of the Klein Tools 77000 heavy-duty construction jack, featuring a reinforced steel I-beam frame, high-visibility orange housing, and precise manual control levers for industrial lifting and leveling.
An infographic highlighting the key features of the construction jack, showing a 10-inch lift range for vertical travel and a maximum load capacity of 350 lbs. for heavy material handling.
An application photo demonstrating hands-free lifting, where a professional contractor uses their foot to engage the lift lever on an HVAC unit, allowing for precise positioning and effortless movement of heavy objects.
A technical diagram illustrating the precise adjustment controls of the Klein Tools jack, including the lift lever, micro-incremental lowering lever, and the full quick-release mechanism for rapid height adjustments.
Close-up detail showing a tradesperson using the construction jack to level a kitchen cabinet, highlighting the removable non-marring footplate covers that provide anti-slip stability and protect finished surfaces.
Heavy-Duty Construction Jack (77000) promotional video
A professional product shot of the Klein Tools 77000 heavy-duty construction jack, featuring a reinforced steel I-beam frame, high-visibility orange housing, and precise manual control levers for industrial lifting and leveling.
An infographic highlighting the key features of the construction jack, showing a 10-inch lift range for vertical travel and a maximum load capacity of 350 lbs. for heavy material handling.
An application photo demonstrating hands-free lifting, where a professional contractor uses their foot to engage the lift lever on an HVAC unit, allowing for precise positioning and effortless movement of heavy objects.
A technical diagram illustrating the precise adjustment controls of the Klein Tools jack, including the lift lever, micro-incremental lowering lever, and the full quick-release mechanism for rapid height adjustments.
Close-up detail showing a tradesperson using the construction jack to level a kitchen cabinet, highlighting the removable non-marring footplate covers that provide anti-slip stability and protect finished surfaces.
Heavy-Duty Construction Jack (77000) promotional video
KLEIN TOOLS

Klein Tools Construction Jack 77000 350 Lbs Capacity 10 Inch Lift Range Steel Frame (Drywall Cabinet Panel Lifting Tool Clamping Capable Manual)

In stock
SKU: 77000
$89.98 USD

Description

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Klein Tools 77000 Heavy-Duty 350 Lbs Capacity Construction Jack

The Klein Tools 77000 is a heavy-duty manual construction jack with a 350-pound load capacity and a 10-inch lifting range, engineered for solo lifting, leveling, and positioning of drywall sheets, wall cabinets, and HVAC units. Constructed with a reinforced steel I-beam frame and dual precision control levers, this multi-functional tool provides controlled lifting, micro-incremental lowering, and a full quick release. It features non-marring anti-slip rubber foot covers to protect finished floors and a removable footplate that converts the vertical jack into a high-pressure horizontal clamp for securing material layouts.

Best Used For:

  • Wall Cabinetry & Appliance Installation: Supporting, leveling, and micro-adjusting heavy kitchen wall cabinets and built-in appliances during solo installation.
  • Drywall & Wall Panel Positioning: Lifting drywall sheets, cement backerboards, and wood wall paneling flush against ceiling joists or framing.
  • Material Clamping & Frame Spreading: Reversing the footplate to convert the tool into a heavy-duty clamp for door jamb framing and deck board alignment.

Key Performance & Safety Features

  • 350 lb Lifting Capacity: Industrial steel I-beam core handles heavy loads without flexing during high-pressure lifting.
  • 10-Inch Vertical Travel Range: Provides broad travel height to accommodate various trade installations and positioning tasks.
  • Dual Precision Control Levers: Features separate handles for controlled lifting steps, micro-incremental lowering, and instant full release.
  • 2-in-1 Jack to Clamp Conversion: Removable footplate setup transforms the vertical lifting jack into a horizontal pressure clamp.
  • Non-Marring Rubber Base Covers: Removable rubber footplate pads prevent slippage and shield finished floor surfaces from scratches.
  • Flush-Mount Base Screw Holes: Integrated countersunk holes in the baseplate allow the tool to be screwed directly to subfloors for added stability.

What's Included

  • (1) Klein Tools Heavy-Duty Construction Jack (77000)
  • (2) Removable Non-Marring Footplate Protective Covers

Technical Specifications

Brand Manufacturer Klein Tools®
Model Part Number OEM SKU 77000
Maximum Load Weight Capacity 350.0 lbs (158.8 kg)
Vertical Lifting Travel Range 10.00 inches (25.4 cm)
Structural Frame Material Reinforced Steel I-Beam Chassis with Polymer Levers
Operation Lever Modes Manual Step-Up Lift, Incremental Lowering, Full Release
Functional Utility Modes Vertical Lifting Jack and Horizontal Pressure Clamp
Overall Tool Height 18.50 inches (47.0 cm)
Overall Base Width 5.40 inches (13.7 cm)
Overall Base Length 9.26 inches (9-1/4" / 23.5 cm)
Base Stabilization Feature Integrated Countersunk Screw Mounting Holes
Assembled Net Tool Weight 4.10 lbs (1.86 kg)
Global Trade Item Number GTIN 00092644770005

Pro-Tip: Screw the jack's baseplate directly down to subfloors or temporary wooden blocks using the built-in countersunk mounting holes to prevent tipping when lifting wide drywall panels or top-heavy cabinetry.