Introduction
The 3M Desktop Document Holder DH340MB is designed to enhance your workspace efficiency by keeping documents upright and easily viewable. Its versatile design accommodates various document sizes and orientations, reducing strain and improving productivity.
Key Features
- Keeps documents upright for easy viewing.
- Height-adjustable clip secures documents in portrait or landscape view.
- Non-skid base ensures stability on your desk.
- Holds letter or legal-sized documents.
- Folds flat for convenient storage.
- Integrated line guide to mark your place.
- Sheet capacity up to 150 sheets.
Setup
Unpacking
Carefully remove the 3M Desktop Document Holder from its packaging. Ensure all components are present: the main document board, the adjustable stand, the sliding clip, and the line guide.
Assembling the Stand
The document holder features a foldable stand at the back. Gently pull the stand outwards until it locks into one of the available angle positions. The stand is designed to provide multiple viewing angles for ergonomic comfort.

The 3M Desktop Document Holder unfolded, showing the adjustable stand at the back.
Attaching the Line Guide and Clip
The line guide and adjustable clip slide into designated tracks on the sides of the document holder. Insert them into the tracks and slide them to your preferred position. The clip can be placed on either side for left or right-handed use.
An official product video demonstrating the features and usage of the 3M Desktop Document Holder, including the adjustable clip and line guide.
Operating Instructions
Placing Documents
Place your documents on the main board of the holder. The bottom ledge is designed with a lip to securely hold up to 150 sheets of paper, preventing them from sliding off.

A close-up view of the 3M Desktop Document Holder's bottom ledge, securely holding a stack of paper and a pen.
Using the Adjustable Clip
The top clip slides up and down to accommodate documents of varying heights. It can secure documents in both portrait and landscape orientations. Adjust the clip to firmly hold the top edge of your document without obscuring important content.

The adjustable clip of the 3M Desktop Document Holder, shown in various positions to accommodate different document orientations.
Utilizing the Line Guide
The transparent line guide can be moved up and down the side tracks. Position it directly below the line of text you are currently reading or typing to maintain your place and reduce eye strain.

The transparent line guide on the 3M Desktop Document Holder, positioned over a document to assist with reading and tracking.
Maintenance
To ensure the longevity and optimal performance of your 3M Desktop Document Holder, regular cleaning is recommended. Wipe the surface with a soft, damp cloth. Avoid using abrasive cleaners or solvents, as these may damage the plastic material. Ensure the tracks for the line guide and clip are free of dust and debris for smooth operation.
Troubleshooting
Common Issues and Solutions
- Documents slide down: Ensure the bottom ledge is fully extended and the adjustable clip is positioned correctly to secure the top of the document. For thicker stacks, ensure the clip is firmly engaged.
- Stand does not maintain desired angle: Verify the stand's support arms are properly engaged in the grooves at the base. Adjust to a stable position.
- Line guide is difficult to move or uneven: Gently clean the track of the line guide. Ensure no debris is obstructing its movement. If the issue persists, check for any manufacturing defects.
Specifications
| Attribute | Detail |
|---|---|
| Brand | 3M |
| Model Number | DH340MB |
| Material | Plastic |
| Color | Black |
| Item Weight | 11.2 ounces (0.7 Pounds) |
| Product Dimensions | 9.6 x 2 x 12.1 inches (9.38"D x 12.6"W x 12"H) |
| Sheet Capacity | Up to 150 sheets |
Warranty and Support
Specific warranty information for the 3M Desktop Document Holder DH340MB is not provided in this manual. For warranty details, product support, or any inquiries, please contact 3M customer service directly through their official website or the retailer where the product was purchased.