I have equipment I want to put on this, modems, routers, monitor etc. Can you tell me what size shelf would fit on this?

Any shelf that is designed for a 19in rack would fit it really depends on the depth of the shelf you want based on the equipment you wish to place on it.

is this rack with small round screws or the square ones?

round screw holes are pre-drilled works with the machined screws that come with most rack equipment. 3 holes per numbers section section, make it easy to use a variety of equipment that may not have standard rack spacing

does it support TYAN FA100B7118, SUPERMICRO SBE-820L, SuperServer 6049GP-TRT or not?

It COULD support those if you have center-mount rack kits. Both SuperMicro's rack kit (MCP-290-00057-0N) and Tyan's kit (452T57400001) assume a 4-post rack, not a 2-post. Personally, I use 4-post racks for servers. 2-post racks are better suited for network equipment (IMHO).

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Main image of Tripp Lite SR2POST 45U 2-Post SmartRack Open Frame Rack - Organize and Secure Network Rack Equipment

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Tripp Lite SR2POST 45U 2-Post SmartRack Open Frame Rack - Organize and Secure Network Rack Equipment

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45U of rack space for 19-inch rackmount
Supports 800 lbs. of rackmount equipment
12-24 threaded and numbered mounting positions
Bolt down provisions
5-Year Limited Warranty

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45U SmartRack 2-Post Open Frame Rack, 800-lb. Capacity - Organize and Secure Net

Model
Brand	Tripp Lite
Model	SR2POST

Details
Type	2 Post Open Frame Rack
Rack Units	45U
Color	Black

Features
Features	Black aluminum with round threaded and numbered mounting holes Toolless button holes to accept PDUs or cable managers

Dimension & Weight
Unit Dimension	84.0" x 20.3" x 4.75" (14" total depth with support base)

Additional Information
First Listed on Newegg	January 15, 2026

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Item#: 9SIA24GKRU7408

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Tripp Lite SR2POST 45U 2-Post SmartRack Open Frame Rack - Organize and Secure Network Rack Equipment

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