Login or create an account
CloseReturning Customer
I am a returning customer
Login or create an account
CloseRegister Account
If you already have an account with us, please login at the login form.
Your Account Has Been Created!
Thank you for registering with Juna Tools!
You will be notified by e-mail once your account has been activated by the store owner.
If you have ANY questions about the operation of this online shop, please contact the store owner.
Account Logout
You have been logged off your account. It is now safe to leave the computer.
Your shopping cart has been saved, the items inside it will be restored whenever you log back into your account.
Knaack STORAGEMASTER Piano Box 57.5 Cu Ft Steel Storage
- $770.00
- Brands Knaack
- Product Code: 90
- Availability: In Stock
Knaack STORAGEMASTER Piano Box 57.5 Cu. Ft. Product Description The Knaack STORAGEMASTER Piano Box is a heavy-duty steel jobsite storage chest designed for contractors, tradespeople, and maintenance professionals who need substantial capacity for tools, equipment, and jobsite supplies. The 57.5-cu.-ft. storage capacity provides ample room for long-handled tools, levels, transits, equipment, and ..
Durable Knaack STORAGEMASTER Piano Box 57.5 Cu Ft Jobsite Storage
Knaack STORAGEMASTER Piano Box 57.5 Cu. Ft.
Product Description
The Knaack STORAGEMASTER Piano Box is a heavy-duty steel jobsite storage chest designed for contractors, tradespeople, and maintenance professionals who need substantial capacity for tools, equipment, and jobsite supplies. The 57.5-cu.-ft. storage capacity provides ample room for long-handled tools, levels, transits, equipment, and other bulky materials.
The 57.5-cu.-ft. STORAGEMASTER Piano Box is available in the Model 90 configuration, while the closely related Model 91 adds an integrated loading ramp. The Model 90 features a large bi-fold cover that opens upward and folds out of the way, providing wide, unobstructed access to the interior.
Built from 16-gauge steel with fully welded seams, the chest is designed for demanding jobsite conditions. Its powder-coat finish helps provide durability and corrosion resistance, while four-way steel skids allow access for material-handling equipment from multiple sides.
Key Features
- 57.5 cu. ft. storage capacity
- Heavy-duty 16-gauge steel construction
- Fully welded seams
- Durable powder-coat finish
- Large bi-fold cover folds out of the way for unrestricted access
- Full-width interior shelves for organized storage
- Suitable for shovels, 4-ft. levels, transits, tools, and jobsite supplies
- WATCHMAN® IV Lock System
- Three-point locking mechanism
- Reinforced lock housing
- Dual gas springs assist cover operation
- Gas-spring guards help protect the springs from shifting loads
- Four-way, 7-gauge steel skids
- Caster-ready design for optional mobility
- Recessed handles for easier handling, including when wearing gloves
- Three-year limited warranty
Storage & Organization
With 57.5 cubic feet of storage, the STORAGEMASTER Piano Box is designed for larger tools and equipment that can be difficult to accommodate in conventional tool chests.
The full-width shelves provide dedicated areas for organizing long tools and supplies, including shovels, levels, transits, and other equipment. The large interior also leaves room for bulkier items that require open storage rather than individual drawers.
The bi-fold cover is a particularly useful feature when working around the open chest. It folds completely out of the way instead of creating a large obstruction above the storage area, making it easier to load and retrieve equipment.
Security
The STORAGEMASTER Piano Box uses the WATCHMAN® IV Lock System with a three-point latch and reinforced lock housing. The recessed locking area is designed to provide additional protection against tampering and pry-in attempts.
The 90-KL configuration is supplied with a compatible Knaack padlock, while lock configurations can vary by SKU. Verify the exact locking arrangement when ordering.
Cover & Gas-Spring System
Dual gas springs assist with opening and supporting the large cover, reducing the effort required to access the storage compartment. Gas-spring guards help protect the springs from damage caused by shifting loads inside the chest.
The bi-fold cover also improves access by folding completely away from the opening when raised.
Mobility & Handling
The Model 90 is caster-ready, allowing optional casters to be added when a mobile configuration is required. Its four-way, 7-gauge steel skids provide access from multiple sides for easier handling with suitable material-moving equipment.
Two recessed handles provide additional gripping points for handling and are designed to remain practical when users are wearing work gloves.
Product Specifications
| Specification | Details |
|---|---|
| Brand | Knaack |
| Product Line | STORAGEMASTER® Piano Box |
| Model | 90 |
| Product Type | Steel Jobsite Storage Chest |
| Storage Capacity | 57.5 cu. ft. |
| Material | Steel |
| Body Construction | 16-gauge steel |
| Construction | Fully welded seams |
| Color | Brown/Tan |
| Finish | Powder coat |
| Length | 72 in. |
| Width | 30 in. |
| Height, Closed | 49 in. |
| Height, Open | 78 in. |
| Approx. Shipping Weight | 380 lb. |
| Cover | Bi-fold |
| Shelving | Full-width interior shelves |
| Lock System | WATCHMAN® IV |
| Locking Mechanism | Three-point latch |
| Lock Housing | Reinforced/recessed |
| Gas Springs | Dual |
| Gas-Spring Protection | Guards included |
| Skids | 4-way, 7-gauge steel |
| Forklift Access | Four-way |
| Casters | Caster-ready; optional |
| Handles | 2 recessed handles |
| Warranty | 3-year limited |
The published specifications identify the Model 90 as 72 × 30 × 49 inches, with 57.5 cubic feet of capacity and approximately 380 lb. shipping weight. When open, the cover raises the overall height to approximately 78 inches.
Model 90 vs. Model 91
Both the Model 90 and Model 91 provide 57.5 cubic feet of storage and share the same basic 72 × 30 × 49-inch closed dimensions. The main difference is the loading configuration:
| Feature | Model 90 | Model 91 |
|---|---|---|
| Capacity | 57.5 cu. ft. | 57.5 cu. ft. |
| Closed Height | 49 in. | 49 in. |
| Width | 72 in. | 72 in. |
| Construction | 16-gauge steel | 16-gauge steel |
| Full-width shelves | Yes | Yes |
| Bi-fold cover | Yes | Yes |
| Integrated loading ramp | No | Yes |
| Approx. Shipping Weight | 380 lb. | 409 lb. |
The Model 91 adds a built-in 12-gauge steel loading ramp, making it better suited for moving heavy or bulky equipment directly into the chest.
Ideal Applications
The Knaack STORAGEMASTER Piano Box is well suited for:
- Construction jobsites
- General contractors
- Mechanical trades
- Electrical contractors
- Plumbing and HVAC work
- Equipment maintenance
- Industrial service operations
- Large tool and equipment storage
- Long-handled tool storage
- Commercial construction projects
Why Choose the Knaack STORAGEMASTER Piano Box?
The Knaack STORAGEMASTER Model 90 combines 57.5 cubic feet of storage, heavy-duty steel construction, organized shelving, wide-open access, and jobsite security in one large-capacity storage chest.
Its full-width shelves make it easier to organize long tools and equipment, while the bi-fold cover provides unobstructed access to the storage area. The WATCHMAN® IV locking system adds security, and the four-way skids provide practical handling options on demanding jobsites.
For applications requiring a built-in ramp for heavy equipment, the Model 91 offers the same 57.5-cu.-ft. capacity with an integrated 12-gauge steel loading ramp.
Specification Note
The 57.5-cu.-ft. STORAGEMASTER Piano Box refers primarily to Models 90 and 91, which have different configurations. The Model 90 is the standard piano box, while Model 91 includes the integrated loading ramp. Always verify the exact model number, lock configuration, accessories, and included hardware before purchase.