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These overhead shelves attach to our Nexus^® Table Frame via eight M8 bolts (included) which affix the shelves to the frame's crossbars.

• Provides Extra Storage Space
• Strong, Melamine-Faced MDF Construction
• Spans the Entire Length of the Chosen Optical Table
  • TFS201: For 2 m (6') Long Optical Tables
  • TFS251: For 2.5 m (8') Long Optical Tables
• Maximum Load Capacity: 135.0 kg (297.0 lbs) per Shelf
• Through Holes in Frame Allow for Easy Cable Management
• Accommodates Our 24-Outlet Power Strip, LED Light Strip, or Cable Trays
• Attaches Directly to the Optical Table Frame

If additional shelf space is required around a workstation, these overhead shelving units, which each contain two shelves, are an ideal solution. The shelves span across the length of the optical table and are a great space saver in the lab. The vertical supports feature a range of mounting points to allow height adjustment, and through holes are included in each corner of the frame for easy cable management. Two options are available, one that is compatible with 2 m (6 ') long optical tables and another for 2.5 m (8') long optical tables.

The shelves can be replaced with aluminum breadboards when using the mounting brackets detailed below.

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PSY121 Monitor Mount Shown Mounted on the TFA4 Adapter

• Compatible with Monitor Mount, Instrument Shelves,
  Breadboard Brackets, or Component Trays
• Strong, Steel Construction
• Attaches Directly to the Overhead Shelf Unit Uprights via
  Included M8 Bolts

The TFA4 Post Adapter allows you to attach post-mounted accessories to the optical table frame overhead shelving unit. As shown in the photo to the right, the adapter is bolted to one of the uprights using two supplied M8 bolts. Once connected, the 75 mm (2.95") long Ø1.5" post can be used to attach various accessories, such as our monitor mount, instrument shelves, breadboard brackets, or component trays.

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An Aluminum Breadboard Fitted to the Overhead Shelf Frame and Viewed from the Underside

• Supports Aluminum Breadboards 300 mm to 600 mm (12" to 24") Wide
• Fits Over The Overhead Shelf Support Frame
  (Shown in Photo to the Right)
• Strong, All-Steel Construction

These brackets allow any of our aluminum breadboards with a width from 300 mm to 600 mm (12" to 24") to be fixed to the frame of the overhead shelf. Four brackets are supplied that attach to the underside of the breadboard using standard M6 or 1/4"-20 cap screws (not supplied).

Dimensions
Item #	Shelf Surface	Posts
PSY221	300 mm x 956 mm (11.81" x 37.64")	750 mm (29.5") Tall
PSY223		-
PSY222	300 mm x 1256 mm (11.81" x 49.45")	750 mm (29.5") Tall
PSY224		-

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Hinged clamps allow for quick attachment to mounting posts.

• Strong, Melamine-Faced MDF Construction
• Width Options: 956 mm (37.6") or 1256 mm (49.4")
• Shelf Depth: 300 mm (11.8")
• Maximum Load: 50 kg (110 lbs)
• This Accessory Requires a Front or Rear Lean Bar for Attachment
  to the Frame

The PSY221 and PSY222 Overhead Shelves mount to the front or rear lean bars of the workstation frame and are supported by two 750 mm (29.5") tall accessory mounting posts (included). Slide the shelf along the post to the desired height above the work surface and then secure it using the hinged clamps.

Up to two shelves can be mounted onto a single set of supporting posts. Additional shelves are sold separately; select the PSY223 additional shelf unit if purchasing the PSY221 overhead shelf and the PSY224 unit if purchasing the PSY222 overhead shelf. These additional shelves are also ideal if you wish to use our 1000 mm (39.4") tall mounting posts (sold seperately) instead of the 750 mm (29.5") tall posts provided with the PSY221 and PSY222.

Each shelf has two hinged clamps, allowing it to be easily positioned by one person anywhere along the post, without needing to remove the existing shelf. Simply secure the clamps to the posts, fit the shelf to the clamps using the M6 bolts provided, and reposition or level as required. For more details on installation, please see the manual, which is available by clicking on the red Docs icon () below.

Our PSY240 LED light strips or the HDPS12 power outlets can be mounted underneath the shelf using the M6-tapped holes provided.

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Hinged clamps allow for quick attachment to mounting posts.

• Strong, Welded-Steel Construction
• Hinged Clamps for Quick Attachment to Mounting Posts
• Four Plastic Storage Bins Included
  • 190 mm Deep x 105 mm Wide x 75 mm High
        (7.48" Deep x 4.13" Wide x 2.95" High)
  • Front Lip Height: 34 mm (1.34")
• Maximum Load: 50 kg (110 lbs)
• This Accessory Requires a Front or Rear Lean Bar for Attachment to the Frame

These Storage Trays consist of a steel tray and a front-located steel rack. The top tray includes a removable tool caddy that can be placed along the top tray for flexible storage and organization of tools, components, and accessories. The rack contains two rows of slots for flexible positioning of the four included plastic storage bins, as shown in the image to the left. Hinged clamps are used for placement on the posts, as shown in the image to the right. Simply slide the shelf along the post to the desired height above the work surface and then secure it using the clamps.

The PSY155/S is 950 mm wide, while the PSY156/S is 1250 mm wide. The trays can be supported by two 750 mm or 1000 mm tall posts (sold separately) that can be attached to the workstation's front or rear lean bars. Two overhead trays can be mounted onto a single set of mounting posts.

Each storage tray comes with two hinged clamps for attachment to mounting posts, as shown in the image to the right. To install the tray, secure the clamps at the desired height on the posts. The tray can then be lowered onto the clamps and attached using the provided M6 cap screws. At this point the tray can be repositioned or leveled as required. For more details on installation, please see the manual, which is available by clicking on the red Docs icon () below.

The bottom of the tray also contains five M6 taps spaced for compatibility with our PSY240 LED light strips or HDPS12 power outlets.

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*These shelves can also be attached to our TFA4 Overhead Shelf Post Adapter. However, an overhead shelving unit will also be required.

• Strong, Melamine-Faced MDF Construction
• Shelf Size:
  • PSY191(/S): 300 mm x 278 mm (11.8" x 10.9")
  • PSY192(/S): 300 mm x 500 mm (11.8" x 19.7")
• Maximum Load Capacity: 20 kg (44 lbs)
• PSY191 and PSY192 Include 750 mm (29.5") Post
• PSY191/S and PSY192/S can be Installed Without Removing the Post or Other Shelves
• This Accessory Requires a Front, Rear, or Side Lean Bar for Attachment to the Frame

These instrument shelves are smaller in size than the overhead shelves featured above and can be used to hold a variety of items above the table. The post of the instrument shelf assembly mounts to the lean bars of the table frame, as shown in the image to the left. More than one shelf can be mounted to the same post. The split-clamp design (see image right) allows the shelves to be installed anywhere on the post without removing the existing shelves. Additional shelves are sold separately but do not include support posts. These additional shelves are also ideal if you wish to use our 1000 mm (39.4") tall mounting posts (sold seperately) instead of the 750 mm (29.5") tall posts provided with the PSY191 and PSY192.

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Hinged Clamps Allow for Quick Attachment to Mounting Posts

*These shelves can also be attached to our TFA4 Overhead Shelf Post Adapter, however, an overhead shelving unit will be also required.

• Strong, Steel Tray
• Tray: 300 mm x 300 mm (11.81" x 11.81")
• 12.7 mm (0.50") High Lip Along all Four Edges Retains Equipment
• Maximum Load: 20 kg (44 lbs)
• PSY320 Includes a 750 mm (29.5") Tall Post
• Hinged Clamp Design Allows for Installation Without Removing Existing Shelves
• Removable Rubber Pad Included

The PSY320 and PSY320/S Component Trays can be used to hold a variety of items, such as screws, hex keys, or other tools, near the working surface. A 12.7 mm (0.50") high lip on the four edges prevents parts from falling off of the tray, while the 300 mm x 300 mm (11.81" x 11.81") surface provides adequate space to hold needed tools. Each tray comes with a PSY322 Hinged Locking Clamp, shown to the right, to attach it to Ø1.5" mounting posts. Its design allows the tray to be installed anywhere on the post without removing the existing shelves. The clamp will hold the vertical position on the post while allowing for free rotational movement around the axis of the post.

A 750 mm (29.5") tall post is included with the PSY320 tray to attach directly to the lean bars of the optical table frame system. If additional trays are needed we offer the PSY320/S, which do not include mounting posts. These additional trays are also ideal if you wish to use our 1000 mm (39.4") tall mounting posts (sold separately) instead of the 750 mm (29.5") tall posts provided with the PSY320, or if you wish to attach the tray to the TFA4 Overhead Shelf Post Adapter.

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PSY321 Bracket Used to Attach a 12" x 12" Breadboard to a Ø1.5" post

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Hinged Clamps Allow for Quick Attachment to Mounting Posts

*These shelves can also be attached to our TFA4 Overhead Shelf Post Adapter. However, an overhead shelving unit will also be required.

• Strong, Steel Construction
• Supports Solid Aluminum Breadboards up to 300 mm x 300 mm (12" x 12")
• Maximum Load: 20 kg (44 lbs)
• PSY321 Includes a 750 mm (29.5") Tall Post
• Hinged Clamp Design Allows for Installation Without Removing Existing Shelves

The PSY321 and PSY321/S Breadboard Brackets are designed to securely mount breadboards onto a Ø1.5" mounting post. Each bracket will support any aluminum breadboard up to 300 mm x 300 mm or 12" x 12" in size, and has a maximum load capacity of 20 kg (44 lbs). A hinged clamp, shown to the right, is included to attach the tray to the mounting posts. Its design allows the bracket to be installed anywhere on the post without removing the existing shelves. Additionally, a PSY322 Hinged Locking Clamp is included, which will hold the vertical position on the post while allowing for free rotational movement around the axis of the post.

A 750 mm (29.5") tall post is included with the PSY321 bracket to attach directly to the optical table frame lean bars. If additional brackets are needed we offer the PSY321/S, which do not include mounting posts. These additional brackets are also ideal if you wish to use our 1000 mm (39.4") tall mounting posts (sold separately) instead of the 750 mm (29.5") tall posts provided with the PSY321, or if you wish to attach the bracket to the TFA4 Overhead Shelf Post Adapter.

The breadboard is mounted to the bracket using six 1/4"-20 (M6) cap screws (not included). For more details on installation, please see the manual, which is available by clicking on the red Docs icon () below.

• Strong, Melamine-Faced, MDF Construction
• Width Options: 450 mm, 600 mm, 750 mm, or 900 mm
• Depth: 600 mm (23.6")
• Maximum Load Capacity: 50 kg (110 lbs)
• These Accessories Require a Front, Rear, or Side Lean Bar for Attachment to the Frame

These side shelves can be mounted to the front, rear, or side lean bars of the Nexus Optical Table Frame. The shelf is attached using mounting brackets with clips that hook onto the lean bar. Measuring 600 mm deep, they are available in four widths to suit a variety of applications: 450 mm, 600 mm, 750 mm, or 900 mm.

• Strong, Melamine-Faced, MDF Construction
• Designed to Hold a Computer
• Dimensions: 260 mm x 450 mm (10.2" x 17.7")
• Maximum Load Capacity: 20 kg (44 lbs)
• This Accessory Requires a Front, Rear, or Side Lean Bar for Attachment to the Frame

This shelving option can be ergonomically positioned around the table frame and is ideally suited for supporting a computer. It can be mounted to the front, rear, or side lean bars and provides a shelf size of 260 mm x 450 mm (10.2" x 17.7"). The shelf is attached using mounting brackets with clips that hook onto the lean bar. 

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Breadboard Mounting Brackets Attaching Aluminum Breadboard to the Lean Bars of the Workstation

• PSY360 Supports Breadboards up to
  300 mm x 600 mm (12" x 24")
• PSY361 Supports Breadboards up to
  600 mm x 900 mm (24" x 36")
• Maximum Load Capacity: 50 kg (110 lbs)
• Strong, All-Steel Construction
• Can be Leveled via Adjustment Screw
• This Accessory Requires a Front, Rear, or Side Lean Bar for Attachment to the Frame

These brackets allow our aluminum breadboards to be fixed to the front, rear, or side lean bars of a Nexus workstation, in a similar way to the side shelves described in the section above. They are available in two sizes: the PSY360 supports breadboards with dimensions up to 300 mm x 600 mm (12" x 24"), while the PSY361 can be used with breadboards with dimensions up to 600 mm x 900 mm (24" x 36").

The breadboard can be leveled by adjusting a screw in the rear face of each bracket, using a 4 mm or 9/64" hex key (click the image to the right). Two brackets are supplied that attach to the underside of the breadboard using standard M6 x 12 mm or 1/4"-20 x 1/2" bolts (not supplied).

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Locking Clamp Positioned Under Our PSY321 Breadboard Mounting Bracket, Holding it in Place and Allowing for Free Rotation of the Bracket

• Retain the Position of Ø1.5" Post Mounted Accessories
• Hinged Clamp Design Allows for Installation Without Removing Existing Shelves

Thorlabs PSY322 Hinged Locking Clamps are the ideal solution for preventing the unwanted movement of accessories along the axis of the post. Locking the clamp in place (5 mm hex key included) directly under a post-mounted accessory, as shown to the right, prevents the accessory from sliding down the post when it is loosened for adjustments. This also allows mounted shelving or brackets to be freely rotated around the axis of the post to a needed position at any time.