Middle Atlantic Lever Lock Horizontal Channel Lace 21in. D 4 pieces - LL-HC21-4

Middle Atlantic LL-HC21-4 Lever Lock Horizontal Lace Channel — 21 in. Depth, 4-Piece Pack

Overview

The Middle Atlantic LL-HC21-4 is a steel horizontal lace channel designed for structured cable management inside AV and security equipment racks. Sold in a 4-piece pack, it integrates with Middle Atlantic's Lever Lock accessory rail system to let you dress and route cables horizontally across rack depths without improvising tie points. If you've ever finished a rack and spent 30 minutes zip-tying cables to whatever you could find, the LL-HC21-4 addresses that problem at the hardware level — cable pathways are defined before the gear goes in, not after.

At 22.07 inches wide and built for 21-inch rack depth applications, this channel is sized for standard two-post and four-post open-frame racks common in security head-end closets, IDF rooms, and AV system racks. The zero-offset design keeps the channel flush to the rail plane, so it won't eat clearance you need for deeper network switches or NVR chassis.

Browse the full Middle Atlantic rack accessories catalog if you're building out a complete cable management and mounting solution.

Key Features

• Steel Construction: All-steel fabrication means this channel handles real-world cable loads — bundles of Cat6, fiber patch cords, and power wiring — without flexing or deforming over time. Plastic raceways crack under sustained load; this doesn't.
• 22.07-Inch Span Width: Wide enough to cover the full horizontal run across a standard rack interior. Cable bundles stay organized across the entire width rather than piling up at a single tie point near the rail.
• Zero Offset (0 in.): The flat, flush mount profile keeps this channel from protruding into your rack depth clearance. Critical when you're installing deep 2U NVRs, managed switches, or patch panels that already push the available depth to the limit.
• Channel Style Form Factor: The open-channel design gives you direct access to cables from above and below — unlike closed-spine lace bars. You can add or reroute a single cable without disturbing the entire bundle, which matters on live production racks where you can't pull everything apart for a single change.
• Lever Lock System Compatibility: Designed as a rack cable management accessory for the Lever Lock horizontal accessory rail platform. Slots in without tools, which the manufacturer classifies as an installation time saver — an accurate description when you're installing multiples across a tall rack.
• 4-Piece Pack (LL-HC21-4): Four channels per order means you can populate an entire rack section in one purchase. A typical 12U cable management zone takes two to four channels; this pack covers a full zone or splits across two partial zones — plan your order quantity against your rack U-count.
• Installation Time Saver Classification: Middle Atlantic explicitly designates this as an installation time saver, reflecting the tool-free Lever Lock attachment mechanism. In high-density deployments where labor time is a real cost factor, that distinction is worth noting during the take-off phase.

Integration and Compatibility

The LL-HC21-4 is built for Middle Atlantic's Lever Lock horizontal accessory rail system. It is not a universal-fit channel — if your rack uses a different manufacturer's cable management rail, verify physical compatibility before ordering. The 22.07-inch width is sized for standard EIA rack interiors; confirm your specific rack model's internal clearance against that dimension if you're working with a non-standard enclosure.

For full rack build-outs in security and AV applications, pair these channels with appropriate rack mounting accessories and vertical cable managers to complete the cable pathway. If you're specifying a surveillance head-end rack, consider whether your NVR and recording equipment depth requirements constrain the zero-offset mounting approach for your specific chassis.

What's in the Box

• 4× LL-HC21-4 Steel Horizontal Lace Channels

Frequently Asked Questions

Q: How many lace channels come in one order of the LL-HC21-4?

A: Each LL-HC21-4 order includes 4 steel horizontal lace channels.

Q: What is the width of the LL-HC21-4 channel?

A: The LL-HC21-4 measures 22.07 inches (56.1 cm) wide, sized for standard EIA rack interiors at 21-inch depth applications.

Q: Does the LL-HC21-4 require tools to install?

A: The LL-HC21-4 uses Middle Atlantic's Lever Lock attachment mechanism, which Middle Atlantic designates as an installation time saver — indicating tool-free or simplified installation on compatible Lever Lock accessory rails.

Q: What material is the LL-HC21-4 made from?

A: The LL-HC21-4 is constructed from steel, providing the structural integrity needed to support cable bundle loads over time without deformation.

Q: What is the offset measurement of the LL-HC21-4?

A: The LL-HC21-4 has a 0-inch offset — it mounts flush to the rail plane, preserving maximum depth clearance inside the rack for equipment.

Q: Is the LL-HC21-4 compatible with all rack brands?

A: The LL-HC21-4 is designed specifically for Middle Atlantic's Lever Lock horizontal accessory rail system. Compatibility with other manufacturers' rails is not confirmed — verify physical fit before ordering for non-Middle Atlantic rack installations.

Karl Wilson

The LL-HC21-4 is the component I spec when a client wants cable management done right on the front end rather than remediated after the rack is loaded. The 22.07-inch span and zero-offset profile are the two numbers that matter here — the span covers the full interior horizontal run, and the zero-offset means no surprise depth conflicts when you're trying to seat a 1.5U NVR or a 1U managed switch with rear cable exits directly adjacent to the channel.

Technical Highlights:

• Steel construction: Sustained cable bundle loads — particularly in dense security racks running multiple Cat6 runs, coax, and fiber — don't stress steel the way they stress plastic. The material spec matters for anything that stays loaded for years.
• 4-piece pack: The LL-HC21-4 pack quantity maps directly to a standard 12U cable management zone. One order, one zone — simplifies the take-off math on a single-rack head-end build.
• Zero offset: With 0 inches of protrusion past the rail plane, this channel won't conflict with equipment that's already close to the rack's maximum depth. That's a real constraint in compact wall-mount enclosures and shallow IDF closets.

Deployment Considerations:

• The Lever Lock attachment is system-specific — the LL-HC21-4 installs on Middle Atlantic Lever Lock horizontal accessory rails, not on generic 10-32 or 12-24 threaded rail systems. Confirm your rack's rail type before adding to the BOM.
• At 22.07 inches wide, this channel is sized for standard EIA interior widths. If you're working with a custom or non-standard rack enclosure with reduced internal clearance, measure the actual interior span before ordering — the channel won't fit in a narrower opening.

The LL-HC21-4 is the right spec for security integrators building structured head-end racks in commercial surveillance installations where the cable management layer needs to be deliberate, load-rated, and consistent across the cabinet — not improvised after the equipment is seated.