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Pre-Term Fiber Assemblies
MTP Trunk Assemblies
MTP Fanout Cables
MTP Cassettes
Fiber Optic Enclosures
Fiber Optic Patch Cables
Ethernet Patch Cables
Ethernet Cable Bundles
Unterminated Fiber By The Foot
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Pre-Term Fiber Assemblies
MTP Trunk Assemblies
MTP Fanout Cables
MTP Cassettes
Fiber Optic Enclosures
Fiber Optic Patch Cables
Ethernet Patch Cables
Ethernet Cable Bundles
Unterminated Fiber By The Foot
The Multilink FRM-4RU-12X-TS-S is a 4 RU 12 termination panel 19" or 23" rack mount fiber distribution unit designed to support both patching and splicing in one unit. The unit has a slide out master panel that allows for accessing terminations or for splicing if used as patch/patch splice housing.
The unit also has a swell latch door and a two-piece top to allow for easy access to the adapter panels. The FRM-4RU-12X-TS is one of a family of units that support fiber termination in rack mount applications.
FEATURES
Weight: 26 lbs.
Capacity: The unit can support patching, patching and splicing Terminations: (12) Multilink Termination Panels (see individual panel capacities),
Splices: Eight 2000-SSTA (24 single splices per tray)
Coatings: Electro statically applied polyester powder coat
Specifications
Mounting Type
Rack Mount
Rack Size Compatibility
19" and 23"
Chassis Type
LGX
Rack Unit Space
4U
Panel Count
12 Panel
Adapter Panel Options
See Dropdown Menu
Material
Lightweight Aluminum
Color / Finish
Black Matte Powder Coat
Dimensions
6.96"H x 17"W x 14.57"D
Hardware
Included
Fiber Strand Capacity
288 w/ Stnd. Adapters
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Product Reviews (255)
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Vytas
First time I've ordered from LANshack, will definitely use them in the future for pre-terminated custom fiber assemblies. Shipped quick and direct to customer.
customer
great options
customer
LANshack really was accommodating and very helpful with my fiber needs. They went to every extent to make sure our network was up and running in no time!
ProductSections
I have used LANshack for custom pre-terminated fiber assemblies for a couple of years now. The quality of the product is top notch. Setting up a new building and ordered this 1200' to connect 2 buildings together. Great termination quality. Zero issues installing and connecting. Connection lit from the start. Thank you very much.
Allen
Whenever we need to install a fiber link from one building to another, we order pre-terminated assemblies from LANshack ! Always done right, very reasonable turn around times. Shipping deals are always a plus.
Questions & Answers
What is a fiber optic enclosure?
A fiber optic enclosure is a protective housing designed to organize, manage, and safeguard fiber optic connections, splices, and terminations. It acts as the central point where fiber optic cables are brought together, connected, and distributed while ensuring protection from environmental, mechanical, and handling damage.
What is a rack mount fiber optic enclosure?
Rack mount enclosures are designed to be installed in standard 19" or 23" racks in telecommunication rooms/closets or data centers.
What are the different types of chassis in fiber optic enclsoures?
The three main chassis are LGX, SHD, and UHD. LGX is the most common and standardized chassis type.
What does the 1, 2, 4, 6, or 12 "U" mean when talking about rack mount fiber optic enclosures?
The "U" stands for rack unit and it’s the standard measurement used to describe the vertical space equipment takes up in a 19 inch or 23 inch equipment rack. 1U equals 1.75 inches in height.
How many fiber strands can fit into a fiber optic enclosure?
The amount of fiber strands that you can fit into an enclosure will depend on how many panels or adapters you can fit and what type of connectors you choose. For example, if you choose a 1 panel enclosure and use a 12LC adapter panel, you can house or couple 12 fibers in that enclosure. If you use 12 MTP/MPO adapter panel, you can house or couple 144 or 288 strands depending on whether the MTP or MPO connector being connected is a 12 or 24 fiber connector.
Don’t Just Take Our Word For It
Dec 09, 2025
Great team.
Open and clear lead times which they met or exceeded expectations. Quality product.
JC
Apr 04, 2026
They do what they say
They do what they say. No BS
gavin714
Feb 27, 2026
LANshack is the BEST!
Online ordering process was quick and easy. We are a non-profit organization and the LANshack team made the tax exemption process quick and easy. Fast shipping is especially appreciated! Thanks so much!
Non-Profit Customer
Apr 08, 2026
everything worked as expected
everything worked as expected. Nice pull sock set up.
customer
May 30, 2026
Excellent Customer Service and Resolution
Tom personally reached out to me, took ownership of the situation, and worked to get my order resolved. He communicated with me directly, ensured the order was shipped, refunded the shipping charges, and provided a discount for the inconvenience.
What stands out most is the level of customer service and accountability shown throughout the process. It is refreshing to see a company stand behind its customers and make things right when an issue occurs.
I received my cable, the issue has been resolved, and I appreciate the effort Tom and his team put into correcting the situation. Based on how this was handled, I would not hesitate to do business with LANshack again.
Thank you, Tom, for your professionalism and commitment to customer service.
Lstargel
Feb 25, 2026
fast service and excellent product
fast service and excellent product
JC STRAND
Nov 25, 2025
Product was as advertised
Product was as advertised. Shipping was on timeJohn Olson
JO
Dec 23, 2025
Excellent company with great speed
Excellent company with great speed, accuracy of products provided and very easy to work with in my experience.
Cline Electric
Dec 30, 2025
Quick shipment
Quick shipment. custom quality cable!
Irwin Spector
Apr 17, 2026
Great prices ++
Great prices, quality and delivery speed
thanks
george
George
Apr 15, 2026
Great Customer Service and received the…
Great Customer Service and received the product faster than expected.
customer
Jan 07, 2026
Great company great items
Great company great items
Joseph Leone
Apr 14, 2026
Great Custom Cables
Great product, exactly what I needed and fairly quick shipping considering they are custom cables! Will definitely be ordering more.
Matt S
May 05, 2026
Superior product/ Superior service
It was particularly useful to me that I was updated regularly about the status of my orders. The products that I purchased were superaltive in every way and exceeded my expectations...
Dr. Craig Smestad
Mar 30, 2026
Product was as ordered and delivered in…
Product was as ordered and delivered in a timely manner. Worked perfectly. Will use again in the future.
Brian Rich
Dec 23, 2025
The product was exactly as ordered
The product was exactly as ordered. The only criticism would be a real-time line on shipping and expected delivery.
D. L.
Apr 02, 2026
Easily ordered exactly what I needed
Easily ordered exactly what I needed. Once I got a shipping label item was delivered quickly and was packaged nicely. Would order from here again.
customer
Feb 17, 2026
LANshack: Best custom CAT8 ethernet cable on the market!
I needed a custom 55 foot S/FTP (Shielded Foiled Twisted Pair) CAT8 indoor ethernet cable for ethernet backhaul between two Eero mesh routers. I did tons of research (including Grok) and I came across LANshack.com. They have the thickest 23AWG wire in their custom CAT8 cable vs 26AWG on Amazon (lower number is thicker; 23AWG wire has roughly twice the cross-sectional area of 26AWG). Excellent price per foot, and this cable is thick! Very quick turnaround once you order from them. I am very pleased with LANshack and I will order from them again for future projects!
Daniel T.
Feb 10, 2026
Great products
Best RJ45 crimpers!
Dave
May 07, 2026
Products were available and ready to…
Products were available and ready to ship quickly. Products worked as they were supposed too.
Robert Butler
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