Architect Checklist: Integrating AV into Custom Millwork

Avoid costly field fixes with AV‑ready millwork

A beautifully concealed AV system can still fail if cabinets ignore heat, access, and cable needs. Too often that oversight forces field cuts, noisy fans, or compromised performance.

We built this checklist from founder‑led CAD and engineering standards used by experienced integrators. It gives architects practical, build‑ready guidance you can add to shop drawings today.

• Dimensional rules of thumb for cabinet depth, rack units, and service clearances so equipment and rear connectors fit.
• Conduit, raceway, and pull‑string standards sized for future upgrades and clean home‑run pathways to the head‑end.
• Serviceability details like removable panels, slide‑out trays, and ventilation to avoid dismantling millwork for routine maintenance.
• Acoustic, thermal, and seismic considerations to keep gear quiet, cool, and code‑compliant in Southern California.
• Required CAD deliverables and as‑built documentation so millworkers and electricians have unambiguous instructions.

What to call out on elevations for depth, clearances, and cooling

Worried a beautiful cabinet will trap heat or block service access? Specify clear mechanical notes on your elevations so the millworker and integrator build for performance, not just looks.

Start with interior depths and clearances. These are the easiest things to get wrong and the hardest to fix on site.

Cabinet sizing and service clearances

Plan cabinet interior depth first. For consumer components, call out 18 to 20 inches minimum. For professional rack systems, specify 24 to 36 inches to allow for equipment and rear cabling.

Show vertical and side clearances on elevations. Allow 4 to 6 inches above heat‑venting gear and 2 to 3 inches at the sides and rear for passive airflow and connector access.

If you use a 19 inch rack, note total U height and add spare U for future gear. Also call out slide‑out trays or removable rear panels for service.

Ventilation, fans, and noise control to specify

Indicate whether passive convection is acceptable or if active cooling is required. Use passive when equipment density is low and intake and exhaust paths are unobstructed.

When active cooling is needed, specify thermostat‑controlled exhaust fans sized around 50 to 100 CFM. That keeps internal temps within safe operating limits.

For quiet operation, call out larger, lower‑speed fans. Fans 150 millimeters or greater move the air with much less audible noise than small, high‑speed units.

Note fan locations away from primary seating. Also show intake at the base and exhaust at the top or rear to use natural convection.

• Call out interior depth per cabinet type: 18–20 inches for consumer gear, 24–36 inches for rack systems.
• Specify 4–6 inches vertical clearance above venting equipment, and 2–3 inches side and rear clearance for airflow and cable access.
• List 19 inch rack U totals and allow spare U for future expansion, plus slide‑out trays or removable panels for service.
• If using active cooling, specify thermostat control and 50–100 CFM exhaust capacity on elevations.
• Require larger, low‑speed fans (150 mm or greater) and place intakes low with exhaust high to reduce noise and aid convection.

For finish‑friendly vents, use perforated metal or louvered panels rather than ad hoc grill cuts. That keeps the look clean while preserving airflow.

If you want a deeper dive on balancing thermal and acoustic goals in concealed cabinetry, read our design guidance.

Conduit, home‑runs, and wiring schedules that keep millwork serviceable

What good is invisible technology if you can no longer upgrade it? Too often hidden AV becomes locked behind finished millwork with no way to pull new cabling.

Start with a conduit‑first approach so future changes do not require opening walls. We recommend empty conduits sized for long‑term serviceability.

Specify a minimum 1 inch conduit for typical AV runs and 1.25 to 2 inch for multi‑cable or fiber pulls. Allow an initial cable fill of only 25 to 40 percent to leave pull headroom.

Always include a pull string in every empty conduit and pull a new string whenever you install cables. That small detail saves hours on future upgrades.

Pathway layout and serviceability notes

Design home‑run pathways from each critical device back to a centralized, climate‑controlled head‑end. Avoid daisy‑chaining display or camera runs through intermediate cabinets.

Keep bend radii generous and add pull boxes where runs require multiple turns. Document service loops so gear can be removed without cutting cables.

Separate low‑voltage AV/data pathways from high‑voltage electrical to minimize interference. Coordinate final electrical notes with the MEP team.

Wiring schedule items to include in millwork and electrical sets

• Home‑run HDMI or fiber paths from each display to the rack, sized per conduit guidance so future standards can be pulled.
• Speaker runs clearly labeled by channel, with conduit or internal raceways and specified service loops at amplifier locations.
• Hardwired Ethernet (Cat5e/Cat6 or better) to APs, IP cameras, and processors, with PoE noted where devices will draw power over the cable.
• Coax runs for RF services and a clear note if future fiber backbone should be reserved in risers or conduit trays.
• Control wiring and low‑voltage junctions for IR, RS‑232, or USB extenders, with exact termination points shown on elevations.

Label every cable at both ends and include as‑built photos of open cavities before drywall. Cross‑reference labels to a master cable schedule in your CAD set.

Coordinate these notes with your electrical drawings and millwork shop drawings. For outlet and panel placement standards, see our guide to AV‑ready outlets and panel layouts.

Keep hidden AV serviceable, cool, and code‑safe

Love a clean, built‑in wall but worry tech will be trapped behind it? Plan for service from day one so you avoid field cuts and frantic retrofits.

We recommend treating AV cabinetry as functional equipment enclosures rather than ordinary storage. Include removable back panels, hinged doors, or slide‑out rack trays so gear can be serviced without dismantling millwork.

Design to fit real gear. For consumer components, allow 18 to 20 inches of interior depth. For professional racks, plan 24 to 36 inches. Leave 2 to 3 inches at the sides and rear for connectors and airflow, and 4 to 6 inches above venting equipment.

Access, ventilation, and finish details

Provide clear intake at the base and exhaust at the top to create a chimney effect. Use passive airflow when density is low and add silent fans when needed for higher heat loads.

For flush aesthetics, specify concealed magnetic catches and call out mortising tolerances in shop drawings. That ensures panels sit perfectly flush and still remove easily for service.

• Install sealed speaker backboxes during rough in to control enclosure volume, prevent rattles, and reduce cross‑room leakage.
• Reinforce TV and projector mounting panels with plywood or engineered backing sized for the display’s weight and VESA pattern.
• When using articulating mounts, design extra rear depth and cable loops so the arm can extend without stressing the millwork.
• Keep heavy gear low in racks, and note that equipment over 400 pounds or with center of mass above 4 feet commonly requires engineered seismic anchorage and documentation.
• Specify leveling feet and vibration isolation where sensitive audio gear is used. Use elastomeric pads for general isolation and consult specialists for advanced systems.

These details save time on site and protect system performance. For deeper shop‑drawing guidance on concealed AV cabinetry, see our detailed design guidance at Hidden AV Cabinetry: Design for Cooling and Access.

Annotate these AV items on millwork and construction drawings

Annotate these items on your millwork and construction drawings.

• Dimension openings, rack depths, and service clearances to finished floor height.
• Show conduit and home‑run pathways sized for future upgrades and include pull strings.
• Call out ventilation, fan locations, and quiet airflow strategies.
• Specify removable panels, slide‑out trays, and clear service access points.
• Mark speaker positions, mount reinforcements, and display sightlines.
• Include CAD deliverables: annotated elevations, rack elevations with RU assignments, wiring schedules, RCPs, and mounting detail sheets.

Insist on founder‑led, build‑ready CAD for cabinetmakers and installers. Those drawings show exact fit, ventilation, and cable routing notes.

Require final as‑builts: exact CAD cable paths, high‑resolution photos of open cavities before drywall, and permanent cable labeling at both ends.

If you want founder‑led AV CAD and build‑ready millwork specs for a Los Angeles or Santa Clarita project, we can help.

Call AUDIO/VIDEO SYSTEMS INTEGRATION, INC at (818) 370-9278 or review our CAD deliverable guide.

Get it right on the drawings and the installation will be invisible, serviceable, and long‑lasting.