Atlas Sound WMA12-23 12RU High Strength Wall Cabinet with Adjustable Rails, 23.5 inch Deep
Atlas Sound WMA12-23 12RU High Strength Wall Cabinet with Adjustable Rails, 23.5 inch Deep is backordered and will ship as soon as it is back in stock.
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Product Overview
The AtlasIED WMA12-23 is a 12RU high-strength wall mount rack cabinet, 23.5" deep, designed for AV head-end equipment, network switches, and amplifiers in rooms where floor space is unavailable. Part of the WMA (Wall Mount Assembly) series developed with extensive field research and contractor input, it pairs a separable back pan with a hinged center section so the rough-in and equipment phases of a wall rack installation can happen on different trades' schedules. With fully adjustable rails, generous cable access, and a UL 1678 safety listing, it is a dependable choice for commercial AV equipment closets, classrooms, and conference room head ends.
Product Description
The WMA12-23 is engineered around a two-piece architecture: the back pan ships boxed separately on the same pallet as the center section, so the contractor can send the rear section to the job site for installation by other trades — electricians can mount and rough-in conduit before the AV equipment ever arrives. A 12.5" x 12.5" cutout in the back pan gives direct cable access through the mounting surface, raised mounting embosses accept power and accessory hardware, and multiple knockouts at the top and bottom of the rear section accommodate conduit and wireless antennas.

Atlas Sound's exclusive integral Alignment Frame supports the complete center section, and extensive internal bracing doubles as cable management and pass-through. The mirror-image back pan allows left- or right-hand hinging of the center section regardless of orientation, and the side lock security system joins center section to back pan with a method one installer can complete safely — a practical labor saving on swing-out wall rack installation.
Inside, the continuous-slot "hat action" rail design allows full front-to-back rail adjustment, with securing holes top and bottom for fixed positioning and hash marks indicating rack increments. The cabinet ships with one set of plated rack rails, one hundred 10-32 x 0.75" rack screws with captive washers, and 3RU blank panels installed; optional WMA-RR rear rail pairs add four-point mounting for heavy gear. Top and bottom cutouts accept Atlas Sound ES series single or dual fan panels for active thermal management of amplifiers, switches, and processors. The whole assembly is finished in durable black electrostatic powder coat and provides an 18" deep center section within a 23.5" overall depth — enough for most commercial AV rack equipment, including many full-depth amplifiers and network appliances.
Key Features
- 12RU Capacity, 23.5" Deep — Twelve rack units with an 18" deep center section handle AV head-end gear, switches, and amplifiers without consuming floor space.
- Two-Piece Back Pan Design — The separately boxed back pan can go to the job site early for rough-in by other trades, keeping AV equipment off-site until needed.
- One-Person Center Section Mounting — The side lock security system and Alignment Frame let a single installer hang the center section safely.
- Fully Adjustable Rails — The continuous-slot hat-action design permits full front-to-back rail positioning, with hash marks for rack-unit alignment.
- Generous Cable Access — A 12.5" x 12.5" back-pan cutout plus top and bottom conduit knockouts simplify structured cabling and wireless antenna pass-through.
- Left- or Right-Hand Hinging — The mirror-image back pan allows the swing direction to match site conditions in either orientation.
- Fan-Ready Thermal Management — Top and bottom cutouts accept Atlas Sound ES series single or dual fan panels; 3RU blank panels ship installed.
- Complete Hardware Included — One set of plated rails and one hundred 10-32 x 0.75" rack screws with captive washers come in the box.
- UL 1678 Safety Listed — The cabinet meets the UL standard covering AV equipment carts, stands, and wall mounts.
- Durable Powder Coat Finish — Black electrostatic powder coating resists scuffing in classrooms, corridors, and equipment rooms.
Typical Applications
- Conference room and boardroom AV head-end equipment
- Training rooms and multi-purpose room equipment closets
- House of worship amplifier and DSP racks
- Government spaces requiring secured wall-mounted equipment
- Commercial meeting space network and control enclosures
- Auditorium and all-hands room support equipment
Technical Specifications
| Rack Units | 12RU |
| Height | 26-5/8" (67.63 cm) |
| Width | 21-7/8" (55.56 cm) |
| Depth | 23-1/2" (59.84 cm) |
| Center Section Depth | 18" |
| Back Pan Cable Cutout | 12.5" x 12.5" |
| Included Hardware | One set plated rack rails; (100) 10-32 x 0.75" screws with captive washers; 3RU blank panels installed |
| Finish | Black electrostatic powder coat |
| Safety Listing | UL 1678 |
| Shipping Weight | 110 lbs (49.90 kg) |
| Warranty | 60 months from date of purchase |
Frequently Asked Questions
Can one technician install the WMA12-23?
Yes. The side lock security system and integral Alignment Frame were designed so a single installer can safely mount the center section to the pre-installed back pan.
Why does the back pan ship in a separate box?
It allows the contractor to send the rear section to the job site early for installation by electricians or other trades, while AV equipment and the center section stay secure until the finish phase.
Does it include a front door?
No. The front door is optional (the product photo shows the cabinet with the optional door). The cabinet ships with rails, 100 rack screws, and 3RU blank panels installed.
How deep is the usable equipment space?
The center section is 18" deep within a 23.5" overall cabinet depth, suitable for most commercial amplifiers, DSPs, and network switches. Optional WMA-RR rear rails add support for heavier equipment.
Can I add active cooling?
Yes. Top and bottom cutouts accept Atlas Sound ES series single or dual fan panels for forced-air ventilation of heat-producing equipment.
What warranty and support apply?
AtlasIED warrants the cabinet for 60 months from date of purchase. For help selecting rails, fan panels, or door options, contact Creation Networks at creationnetworks.net.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
Nationwide Audiovisual Services, Design, Installation & Support
Creation Networks is a trusted nationwide partner for complete audiovisual solutions — delivering expert AV system sales, professional design, programming, installation, and ongoing support to organizations across the United States.
From Microsoft Teams Rooms and enterprise video conferencing to LED video walls, live streaming production, and hybrid collaboration systems, we provide end-to-end AV integration using premium, certified technology from industry leaders including Crestron, Q-SYS, Shure, Extron, and Absen.
Whether you operate a single location or manage facilities nationwide, Creation Networks ensures your AV systems are designed for reliability, scalability, security, and long-term performance — helping your organization communicate more effectively and operate at peak efficiency.
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