AU8 — Single-sided Cantilever Rack Add-On Kit (8')

Need a starter unit first? View the matching SU8 Heavy Duty Single-Sided Cantilever Rack Starter Kit →

The AU8 is the Series 4000 Standard Heavy Duty add-on kit designed to extend your SU8 starter unit into a continuous row system. Where a starter unit requires 2 uprights to form a single bay, each add-on unit adds a full bay using only 1 shared upright — eliminating redundant framing, reducing cost per bay, and maximizing your floor footprint.

Ships complete with 1 upright, 4 straight arms, and a brace set — everything needed to attach directly to an existing SU8 bay. Arms adjust on 3" centers the full height of the upright.

What's Included

• 1 upright (8' height, 37" base length)
• 4 straight arms (24" length, 2,000 lb capacity each)
• 1 brace set (72" brace set)
• All hardware for assembly

Why expand with the AU8

Lower cost per bay than a second starter — Add-on units share one upright with the adjacent bay instead of requiring two. You get the same storage bay at a fraction of the full starter price.

Same arm capacity, same system — The AU8 uses identical Series 4000 arms and hardware as the SU8. No compatibility concerns, no mixed components — everything integrates directly.

Build as long as you need — Chain multiple AU8 units together to create a continuous row of any length. Each unit adds one full bay of storage at 8' tall with 24" arms.

Forklift accessible — Open base design allows loading and unloading directly from the aisle, same as the starter unit.

Not sure which rack you need? Read our cantilever rack buying guide for help with arm length, capacity, upright spacing and height.

Questions before ordering? Call (929) 577-4339 or email support@mywarehouseworld.com.

Floor Anchors (Required, Not Included): The add-on upright must be anchored to the floor before use. MECO recommends a minimum of 2 anchors per base — 1 in the front and 1 in the back on opposite sides of the base. Each base has holes for up to 4 anchors. Recommended anchor spec: ½" × 4¼". Anchors are not sold by MECO and must be sourced independently. Building codes vary by location — consult local codes for specific requirements.

Series 4000 Standard Heavy Duty Single-sided Add-On Units — Model Comparison

Arm capacity is set by arm length. Upright capacity is lower on taller uprights and with longer arms, so check the upright rating for the height and arm length you choose. All capacities are per MECO Omaha specifications based on evenly distributed loads.

Need double-sided storage? See the ADU8, ADU10, ADU12 double-sided add-on units.

Specifications

Important: Capacities are based on evenly distributed loads. Arms must never be placed on the back side of a single-sided upright. Unit must be anchored to the floor per assembly instructions. Add-on units must only be used with a compatible SU8 starter unit.

Customization & Accessories

Arm Lips

Bolt-on 2" arm lips are available for this model. Lips extend 2" above the arm surface and retain cylindrical loads — pipe, tubing, round bar — that may otherwise roll off the end of the arm. Non-structural; a retention feature only.

To order with arm lips, contact us at support@mywarehouseworld.com or (929) 577-4339.

Additional Customization Options

Contact us to discuss any of the following configurations:

Inclined Arms — For cylindrical loads that tend to roll, inclined arms pitch at 20° (approximately 4.36" per foot) to keep material secure on the rack.

Bolt-On Pipe Sockets — Field-installable pipe sockets (1⅜" inside diameter) provide an additional stop at the end of the arm for round stock and tubing.

Drop-In Deck Support Saddles — Convert to a decked system for storing boxes, cartons, or furniture. Pre-engineered to accommodate 2×4 cross supports.

Custom Colors — Available at additional cost.

To discuss customization options, call (929) 577-4339 or email support@mywarehouseworld.com.

Shipping & Returns

Shipping Policy

This product ships as industrial freight via motor carrier from Omaha, NE. Need liftgate delivery? Tell us when you request your freight quote and we'll add it.

Freight is calculated based on your location and order size. Contact us before ordering for a freight quote specific to your facility.

Estimated lead times based on total order value:

Lead times are based on total order value and may vary. Contact us to confirm timing before ordering. If you have a delivery deadline or need to hold shipment until your facility is ready, we can coordinate directly with the supplier.

Freight quotes are subject to change without notice. Tracking provided via email once your order ships.

Return Policy

To initiate a return, contact us at support@mywarehouseworld.com or (929) 577-4339 within 30 days of delivery.