Can the C clamps be faced the other way so that the shelf angles back and the shelf is overhanging the back of desk instead of leaning to the front?

You could install the shelf backward so more of the overhang is behind the uprights, but the clamps themselves cannot be turned relative to the angled uprights that attach to the desk, they are a single solid piece. You won't gain much space doing that, maybe three inches further back. The brackets screw into two holes on the bottom of the shelf and they are close to the edge on one side and only about 3 inches away from the other side.

When mounted on a desk, will the shelf be flush with the desk? Or does it hang over more?

I'm unsure what part you're asking is flush with the desk, but the back of the clamp is in line with the back of the shelf, so it should all line up at the BACK of the desk.

What is the measurement of the space between the clamps of the larger one? I want to make sure it won’t accidentally cover my grommets.

Hello, Thank you for your question! It's 25.5" between clamps of the STAND-SHELF40B. VIVO Customer Support

Can this clamp to a glass desk?

Hello and thank you for your question! This can clamp to a glass desk but you may want to use some small wood blocks with the clamps for reinforcement and protection.

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VIVO Black Clamp-on Large 40 inch Ergonomic Desk Shelf, Dual Computer Monitor and Laptop Riser Stand - Desk Organizer for 2 Screens STAND-SHELF40B

VIVO Black Clamp-on Large 40 inch Ergonomic Desk Shelf, Dual Computer Monitor and Laptop Riser Stand - Desk Organizer for 2 Screens STAND-SHELF40B

Product ID: 147349127

Details

Brand
VIVO
Finish Type
Laminated
Material
Alloy Steel
Mounting Type
Tabletop Mount
Number of Shelves
1
Room Type
Office

📏39.4-inch spacious surface

🔩Heavy-duty clamp mounts securely

🖥️Supports dual monitors & laptops

$347.05

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Description

🖥️ Elevate your workspace, elevate your game.

ROCK SOLID STABILITY - Dual C-clamps secure the shelf firmly to desks up to 1.2” thick—no wobble, no worries.
CLUTTER FREE COMMAND CENTER - 5.1-inch clearance underneath offers versatile storage to keep your workspace pristine.
MAXIMIZE YOUR DESK REAL ESTATE - Expansive 40-inch shelf creates a sleek second tier for dual screens and accessories.
EFFORTLESS SETUP INSTANT UPGRADE - All hardware included with simple instructions—transform your desk in minutes.
ERGONOMIC ELEVATION FOR PRODUCTIVITY - Raise monitors and laptops to eye level, reducing neck strain and boosting focus.

The VIVO Black Clamp-on Large 40-inch Ergonomic Desk Shelf is a modern, durable riser designed to support dual monitors and laptops up to 44 lbs. Featuring a spacious laminated surface and sturdy alloy steel construction, it clamps securely to desks up to 1.2 inches thick. This shelf enhances ergonomics by elevating screens to eye level while providing ample under-shelf storage, making it an ideal organizer for professional and home offices alike.

Specifications

ASIN	B07S868SFX
Additional Features	Durable, Heavy Duty, Space Saving
Best Sellers Rank	#328 in Computer Monitor Stands
Brand Name	VIVO
Color	Black
Customer Reviews	4.6 4.6 out of 5 stars (473)
Finish Types	Laminated
Included Components	Hardware
Installation Type	Desktop
Is Extendable	No
Item Depth	0.6 inches
Item Dimensions	39.4 x 10.2 x 5.1 inches
Manufacturer	VIVO
Manufacturer Part Number	STAND-SHELF40B
Manufacturer Warranty Description	3 year warranty.
Material Type	Alloy Steel, Wood
Model Number	STAND-SHELF40B
Mounting Type	Tabletop Mount
Number Of Shelves	1
Number of Items	1
Required Assembly	Yes
Room Type	Office
Shape	Rectangular
Shelf Bracket Shape	straight
Shelf Thickness	0.6 Inches
Shelf Type	Bracket Shelf
Size	40" shelf
Style Name	Modern
UPC	818538025477
Weight Capacity	Maximum weight: 44 Pounds
Weight Capacity Maximum	44 Pounds

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