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Mayline EXT3018865A 4-Post Heavy Duty Filing - Adder Unit

By Mayline | Mfr#: EXT3018865A | Tiger#: TM79082
  • 4-Post Heavy Duty Filing - Adder Unit MAYEXT3018865A-
  • MAYEXT3018865A- 4-Post Heavy Duty Filing - Adder Unit - Scatch
  • MAYEXT3018865A- 4-Post Heavy Duty Filing - Adder Unit - Finish Colors


  • 5 Shelves with 1000 lbs Weight Capacity Each 
  • 5 Width & 2 Design Options 
  • 12 3/4" Between shelves 
  • Compatible with Mayline Mobile Aisle 1000 and Mobile Lite
  • Easy to Assemble, no Hardware Required
List Price: $1,542.00
You Save: $590.16 - 38%
  • Product Options
Free Shipping (USA)
Ships Out Within: 4-6 Weeks

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Please call our Product Specialist to clarify your needs and if you may need more parts.

Dividers are required to complete your Filing Unit Order. Please make your choice HERE

Overview for Mayline EXT3018865A 4-Post Heavy Duty Filing - Adder Unit

Mayline 4-Post Heavy Duty Filing - Adder Unit employs a unique modular design that brings your storage potential to an unlimited capacity. Start off with a basic unit and build up your storage system using Adder models. With Mayline 4-Post shelving adder systems you are free to create and alternate your storage space to fit folders, organize files, stock boxes and what not. Experience the benefits of a greater visibility, easier file retrieval, simple assembly and a large variety of upgrades.

Adder Model Features
Mayline 4-Post Heavy Duty Adder Unit features a closed "T" style upright and 5 shelves made of an 18-gauge steel that ensures exceptional durability and a weight capacity of as much as 1000 lbs per shelf. The Adder is available in single or double entry configurations at your choice allowing to accommodate just about anything including but not limited to banker’s boxes, pharmaceuticals, sporting goods and various tools. The clearance between shelves equals to 12 3/4" which is taller than standard and provides more storage options. This Starter 4-Post Heavy Duty Filing Unit can be mounted on Mayline Mobile Aisle 1000 and Mobile Lite for enhanced storage density! The unit construction allows easy assembly with no hardware required.

Please note: Dividers are not included with this product,  but are required when using standard common stops. When used, Dividers can be adjusted on 3" centers along the shelf. To purchase the Dividers or any other optional accessories, please see the Related Products tab above.

4-Post Heavy Duty Filing- Adder Unit - Shelving Options Chart
Item #WidthDesign Depth List PricePrice
EXT3018865A30"Single Entry18"$911$523,72
EXT2436865A24"Double Entry36"$1 422$789,44
EXT3036865A30"$1 435$796,20
EXT3636865A36"$1 452$805,04
EXT4236865A42"$1 457$807,64
EXT4836865A48"$1 492$825,84

Customize Your 4-Post Heavy Duty Filing - Adder Unit

For Heavy Duty Adder models Mayline allows several customizible options to best suit your storage requirements.
Width Options
5 width options are provided to match any of your storage requirements.

  • 24" Width 
  • 30" Width
  • 36" Width
  • 42" Width
  • 48" Width

Design Options
The two design options include Single and Double entry variations. Both offer a generous storage capacity allowing to accommodate various media and goods.

  • Single Entry - 18" Depth 
  • Double entry - 36" Depth 

Color Options
Mayline offers a choice of 17 finish colors. 

To placed an order, please select from the drop down menu above