Middle Atlantic 4SP Vertical SLD DR BW - VWM-SD-4-36K-BW

Middle Atlantic VWM-SD-4-36K-BW 4U Vertical Wall-Mount Rack Enclosure

The Middle Atlantic VWM-SD-4-36K-BW is a 4-rack-unit vertical wall-mount steel enclosure designed for small surveillance head-end closets, IDF rooms, and edge security equipment deployments where floor space is not available but a full 36-inch cabinet footprint is acceptable. At 25 inches wide and 12 inches deep (27.8 inches of usable depth), this enclosure accommodates standard 19-inch rack equipment up to 150 lbs UL-rated load — enough headroom for an NVR, a PoE switch, and a UPS in a single wall-hung assembly. If you are searching for this unit, note it is also indexed as VWM SD 4 36K BW.

Overview

Wall-mount racks solve a specific problem: a surveillance or access control closet that cannot fit a floor-standing cabinet. The VWM-SD-4-36K-BW addresses that scenario with a steel construction, black wrinkle powder-coat finish, and a solid-door front that keeps cables and gear out of sight while providing basic physical security. The enclosure ships from a USA manufacturing origin and carries TAA compliance — a requirement on many federal, state, and municipal contracts. GREENGUARD certification covers low chemical emissions, relevant for enclosed mechanical rooms and occupied spaces. UL listing confirms independent structural and safety validation.

Explore the full Middle Atlantic rack and enclosure line for complementary accessories including shelves, blanks, and power strips designed for this family.

Key Features

• 4 Rack Units / 36-Inch Cabinet Height: Four rack units of usable rail space in a 36-inch-tall enclosure. That is enough room for a compact NVR (1U–2U), a managed PoE switch (1U), and a patch panel or power strip — a complete small-site surveillance head-end in one wall-hung unit. Browse compatible network video recorders to plan your layout.
• 150 lb UL-Rated Load Capacity: The 150 lb UL-certified load rating is the figure that matters when specifying wall anchoring — not a marketing number. A fully loaded NVR with hard drives, a switch, and a UPS can approach 80–100 lbs; you have genuine margin here. Confirm your wall structure (concrete, CMU, or wood stud) supports the combined enclosure-plus-gear weight before installation.
• 27.8-Inch Usable Depth: The 27.8-inch usable depth (12-inch nominal cabinet depth) accommodates most 1U rack-mount appliances, which typically run 14–20 inches deep. Deeper 2-post-style gear or 24-inch deep servers will not fit — this is designed for AV and security-class rack equipment, not datacenter servers.
• 10-32 and Cage Nut Rack Rail: Dual-compatible rack rails accept both 10-32 threaded and standard cage nut hardware. This means you are not locked into a single fastener type — mix and match equipment from different manufacturers without buying adapter strips.
• Solid Steel Door with Swing Handle: The solid door with a 25mm × 150mm swing handle keeps gear dust-free and reduces visual clutter in customer-facing spaces. It is not a locking door by default — if physical security of the enclosed gear is a requirement, verify whether a lock kit is available for this model in the VWM series.
• Black Wrinkle Powder-Coat Finish: The textured black wrinkle finish is durable and hides scuffs from cable management and installation. It is a standard finish in the security industry and blends into typical server room or IDF environments without standing out.
• Forward Compatible Design: Middle Atlantic designates this enclosure as forward compatible, meaning future accessories and components within the VWM product family are designed to integrate without requiring a cabinet replacement. For growing deployments, this reduces long-term cost of ownership when you need to add shelves, fan trays, or power management accessories.
• TAA Compliant / USA Origin: Manufactured in the USA and TAA-compliant, making it eligible for GSA schedules, federal procurement contracts, and state/local government projects with domestic-origin requirements. This is a verifiable compliance designation — not a marketing claim.
• GREENGUARD Certified: GREENGUARD certification confirms the enclosure meets low-emission standards for volatile organic compounds. Relevant if you are deploying in a school, healthcare facility, or any occupied space where air-quality specifications are enforced by the customer or building code.

Integration and Compatibility

The VWM-SD-4-36K-BW is a 19-inch standard rack format enclosure. Any 19-inch rack-mount device — NVRs, PoE network switches, access control panels, fiber patch panels, UPS units — installs on the 10-32 or cage-nut rails. The 4RU capacity and 27.8-inch usable depth are the two constraints to verify against your equipment list before ordering.

Wall-mount installation requires customer-supplied hardware appropriate to the wall substrate. The 62.5 lb product weight (73 lb shipping weight) means the mounting assembly and fastener pattern must be engineered for the specific wall construction. Middle Atlantic publishes installation documentation; follow their load and anchor specifications rather than generic wall-anchor guidance.

For planning a complete edge surveillance enclosure, review our rack and enclosure selection guide for wall-mount sizing, cable management, and power planning considerations.

Frequently Asked Questions

Q: Is the VWM-SD-4-36K-BW TAA compliant?

A: Yes. The VWM-SD-4-36K-BW carries TAA compliance and is manufactured in the USA, making it eligible for federal, state, and municipal procurement contracts requiring domestic-origin products under the Trade Agreements Act.

Q: What is the UL-rated load capacity of the VWM-SD-4-36K-BW?

A: The UL-rated load capacity is 150 lbs (68 kg). This is an independently verified figure, not a nominal rating, and should be used as the basis for your wall-anchor engineering calculations.

Q: How much usable rack depth does the VWM-SD-4-36K-BW provide?

A: The usable depth is 27.8 inches (70.6 cm). The nominal cabinet depth is 12 inches. Equipment deeper than approximately 24–25 inches may not fit; verify your NVR or appliance depth against this figure before ordering.

Q: What rack rail type does the VWM-SD-4-36K-BW use?

A: The enclosure ships with rails that accept both 10-32 threaded fasteners and standard cage nuts, so you can mount equipment using either hardware type without additional adapters.

Q: Does the VWM-SD-4-36K-BW come with a locking door?

A: The standard configuration includes a solid door with a 25mm × 150mm swing handle. Evidence does not confirm a built-in lock mechanism on the standard model; consult Middle Atlantic's accessory documentation if a keyed lock is required for your application.

Q: What is the product weight of the VWM-SD-4-36K-BW, and what should I expect for shipping?

A: The product weighs 62.5 lbs (28.4 kg). Shipping weight is 73 lbs (33.1 kg), reflecting packaging and mounting hardware included in the carton.

Ted Perry

The VWM-SD-4-36K-BW is the enclosure I reach for when a client has a surveillance head-end closet with no floor space and a hard requirement for TAA-compliant gear. Four rack units in a 36-inch cabinet with 27.8 inches of usable depth is genuinely workable for a compact NVR-plus-switch stack, and the 150 lb UL load rating gives you enough structural overhead to run a full small-site deployment without sweating the anchor math.

Technical Highlights:

• 150 lb UL Load Rating: This is the number your structural engineer or installing contractor needs. A typical 4-bay NVR with drives plus a 24-port PoE switch will come in around 60–80 lbs combined — you are well within the rated limit, but wall substrate (concrete block vs. drywall over wood stud) drives the anchor selection, not the cabinet itself.
• 27.8-Inch Usable Depth: Most security-class NVRs and managed switches run 14–19 inches deep. The 27.8-inch usable space gives you clearance for cable dress behind the equipment — a detail that matters when you are making changes in a live closet six months post-installation.
• TAA / USA Origin: For government integrators, TAA compliance on the enclosure closes a common gap on projects where cameras and NVRs are NDAA-cleared but the rack hardware is overlooked. The VWM-SD-4-36K-BW covers that base with a verifiable USA-origin designation.

Deployment Considerations:

• At 62.5 lbs product weight (73 lbs shipping), two-person installation is practical — plan accordingly for lift and hold while anchors are set. Do not attempt solo wall-mount on this unit.
• The solid door has a swing handle but no evidence of a built-in lock on the standard model. If the closet is in a semi-public area — a school hallway, retail back room, or lobby IDF — confirm with your dealer whether a lock kit is available before the project bid is final.

This enclosure is a strong fit for K-12 and municipal surveillance closets where TAA compliance is non-negotiable, space is constrained, and the equipment list is a standard NVR-plus-switch stack that stays within the 4RU and 27.8-inch depth envelope.