Middle Atlantic 24 SP Large Perf Door - LVFD-WMRK-24

Middle Atlantic LVFD-WMRK-24 24U Large Vented Front Door for WMRK Rack Series

Overview

The Middle Atlantic LVFD-WMRK-24 is a 24U vented front door purpose-built for the WMRK rack enclosure series. At 64% vent open area across a panel measuring 42.87" tall by 20.04" wide, it delivers substantially better passive airflow than solid or minimally perforated alternatives — a genuine operational difference in rack environments where thermal management determines equipment lifespan. If you're running active network gear, NVRs, or power distribution inside a WMRK enclosure 24/7, this is the door configuration to specify rather than a solid panel.

The LVFD-WMRK-24 (often searched as LVFD WMRK 24) ships at 20 lbs and is finished in a textured black powder coat that holds up to the handling and incidental contact typical in AV, security, and IT rack installations.

Key Features

• 64% Vent Open Area: More than half the door face is open to airflow, which matters on a sealed rack cabinet running heat-generating electronics continuously. Passive convection works; solid doors trap heat and shorten equipment MTBF. If your NVR or UPS runs warm, the difference between a solid door and this panel is measurable on an IR thermometer.
• 24U Capacity (42.87" / 108.9 cm Height): Sized for standard 24-rack-unit enclosures. At just under 43" tall, it fits the WMRK series footprint precisely — no field trimming, no gap sealing. Height matters when the door seals against the frame top-to-bottom; an undersized door creates bypass airflow that defeats the thermal design.
• 20.04" (50.9 cm) Width: Matches WMRK series rack width exactly. Width is a hard compatibility spec — a door that's even a few millimeters off won't latch or seal correctly against the rack frame. Source the LVFD-WMRK-24 specifically for WMRK enclosures, not as a generic fit.
• Textured Black Powder Coat Finish: Powder coat is more durable than painted steel for rack doors — it resists chipping at hinge points and along latch edges where bare metal would corrode in humid equipment rooms or outdoor enclosures. The textured surface also hides fingerprints and minor surface marks better than smooth finishes, which matters in client-visible installations.
• 1.63" (4.1 cm) Depth: Shallow door profile means the LVFD-WMRK-24 adds minimal depth to the overall rack footprint — useful in tight equipment rooms or wall-recessed rack locations where every inch of clearance in front of the rack counts.
• 20 lb Shipping Weight: Steel construction at this panel size lands around 20 lbs — substantial enough for rigid frame alignment but not so heavy that single-person installation becomes impractical. Account for it when specifying wall-mount or floor-mount WMRK rack configurations that approach their weight ratings.

Integration & Compatibility

The LVFD-WMRK-24 is designed for and compatible with the Middle Atlantic WMRK rack series (Base Series: WMRK). It is not a universal fit — rack door dimensions, hinge spacing, and latch geometry are series-specific. Verify your enclosure is a WMRK-series rack before ordering. For other Middle Atlantic rack series, consult the Middle Atlantic rack and enclosure line to identify the correct door SKU for your enclosure model.

For integrators building out security or AV equipment racks, this door pairs naturally with rack enclosures and accessories sized for NVRs, patch panels, and power distribution units. When specifying thermal management for a rack, combine this vented door with appropriate rack cooling solutions if passive airflow alone is insufficient for the heat load. If you're planning a multi-rack installation, a structured cabling and rack planning guide can help you account for airflow paths between adjacent enclosures.

Frequently Asked Questions

Q: Which rack series is the LVFD-WMRK-24 compatible with?

A: The LVFD-WMRK-24 is built for the Middle Atlantic WMRK rack series (Base Series: WMRK). It is not a universal rack door — hinge placement, latch geometry, and panel dimensions are matched to WMRK enclosures specifically. Confirm your enclosure model before ordering.

Q: What is the vent open area percentage on the LVFD-WMRK-24?

A: 64%. That means nearly two-thirds of the door face is perforated and open to airflow, making it suitable for racks containing heat-generating active electronics like NVRs, switches, or power equipment.

Q: What are the exact dimensions of the LVFD-WMRK-24?

A: Height: 42.87 in (108.9 cm), Width: 20.04 in (50.9 cm), Depth: 1.63 in (4.1 cm). It is rated for 24 rack units.

Q: What finish does the LVFD-WMRK-24 use?

A: Textured black powder coat. This finish is more chip-resistant than standard paint, particularly at hinge and latch contact points that see repeated stress during normal door operation.

Q: What does the LVFD-WMRK-24 ship at in terms of weight?

A: The shipping weight is 20 lbs (9.1 kg). Plan accordingly when assessing rack weight budgets for wall-mount or elevated floor-mount installations.

Q: Can the LVFD-WMRK-24 be used as a replacement door on an existing WMRK rack?

A: Yes — the LVFD-WMRK-24 is a front door panel for WMRK-series enclosures and can replace a solid or existing door on a compatible 24U WMRK rack. Confirm the rack model matches the WMRK base series before purchasing.

Ted Perry

The spec I keep coming back to on the LVFD-WMRK-24 is that 64% vent open area. On a 24U enclosure running an NVR stack plus PoE switches and a UPS, the difference between a solid front door and this perforated panel can be 8–12°C of ambient air temperature inside the rack — and that delta directly maps to whether your drives hit their MTBF or fail two years early.

Technical Highlights:

• 64% Vent Open Area: Nearly two-thirds of the 42.87" × 20.04" door face is open — passive convection has a real path to work with. This is not a token perforation; it's engineered for continuous-duty thermal loads.
• Panel Dimensions (42.87" H × 20.04" W × 1.63" D): The 1.63" shallow depth keeps the overall rack footprint compact — relevant in equipment rooms where front-access clearance is constrained by adjacent walls or other racks.
• Textured Black Powder Coat: Holds up at hinge and latch contact points where cheaper painted finishes chip and corrode. In a wall-mount rack that gets opened daily by field technicians, finish durability is a real operational factor, not an aesthetic one.

Deployment Considerations:

• The LVFD-WMRK-24 is series-specific to WMRK enclosures — hinge pattern and latch geometry are not interchangeable with other Middle Atlantic rack lines. Confirm the base series on your enclosure before ordering; a wrong-series door won't latch and can't be field-modified to fit.
• At 20 lbs shipping weight, the door itself adds meaningful mass to a rack that may already be near its weight rating — particularly relevant on wall-mount WMRK configurations where the bracket is rated for a specific total payload. Account for door weight in your load calculation.

For security integrators building out 24U NVR + switch racks in equipment closets or back-of-house server rooms, the LVFD-WMRK-24 is the right front door when continuous-duty heat load is present and the installation doesn't justify active cooling. It keeps the enclosure closed and professional-looking while not strangling airflow the way a solid door would.