Sign Company LED Module RFQ and Enclosure Design Template

A useful LED module RFQ begins before the quotation request is sent. The sign company should define the active display area, enclosure constraints, viewing conditions, installation environment, electrical input, ventilation approach, control requirements and service access. Drawings, site photos and responsibility boundaries should accompany the written specifications whenever available. If these inputs remain unclear, the supplier may be unable to recommend a suitable module layout, power architecture or control configuration.

A short email containing only the cabinet size and requested pixel pitch is rarely enough for a dependable module quotation.

The estimator may know the overall sign dimensions, but the module supplier still has to determine whether the proposed display area can be divided into complete modules, whether the enclosure has enough internal space, how the modules will be serviced and what power and control equipment the project requires.

This article provides a workflow and a reusable template for preparing that information before requesting a quotation.

Start With the Project Scope

Before entering technical fields, identify what the supplier is being asked to provide.

A module RFQ can refer to several different supply scopes:

• LED modules only
• LED modules with power supplies
• Modules, power supplies and receiving cards
• A complete internal display package for an enclosure
• A preassembled display section
• Engineering support for a new sign enclosure

These scopes require different information. If the RFQ says “LED modules required” while the estimator expects a complete working display package, the resulting quotation may exclude essential control, electrical or mounting components.

The opening section of the RFQ should therefore record:

• Project or quotation reference
• Sign company and estimator contact
• Project location
• Indoor, outdoor or sheltered installation
• New construction or retrofit
• Single-sided or double-sided display
• Requested supply scope
• Required quantity
• Target quotation date
• Expected delivery destination
• Current drawing status

The project location matters because local permitting, electrical and product documentation requirements can affect the final configuration. The RFQ should identify the jurisdiction without assuming that one configuration or document set applies to every project.

Separate the Sign Size From the Display Area

The overall enclosure dimensions and the active LED display area are different measurements. Both should be documented.

The overall sign dimensions may include architectural cladding, retainers, borders, structural framing, ventilation space and access panels. The active display area is the portion that will contain illuminated pixels.

Record the following dimensions separately:

• Overall enclosure width, height and depth
• Visible opening width and height
• Intended active display width and height
• Border or retainer dimensions
• Internal clear width, height and depth
• Structural members inside the enclosure
• Available space behind the modules
• Door, panel or access-opening dimensions

For a retrofit, provide the dimensions as measured rather than relying only on an old drawing. Existing framing, wiring, fasteners and previous repair work can reduce the usable internal space.

For a new enclosure, clearly mark which dimensions are fixed and which can still be adjusted. A small change to the active display area may allow a cleaner complete-module layout, while a fixed architectural opening may require the supplier to work within stricter limits.

Provide a Dimensioned Drawing

A simple dimensioned sketch is more useful than a long description. It should show:

• Front elevation
• Side section
• Active display boundary
• Internal framing
• Mounting surfaces
• Cable paths
• Power-supply area
• Control-equipment area
• Ventilation openings
• Service doors or removable panels

CAD files can be included when available, but a reviewed PDF should also be attached so the estimator and supplier are discussing the same revision.

Every drawing should show the date, revision and units of measurement.

Define Viewing and Content Conditions

Pixel pitch should not be selected from one viewing-distance number alone.

The supplier needs to understand how people will encounter the sign, what content it will show and how much time they will have to read it. A roadside sign viewed from a moving vehicle presents a different decision from a pedestrian sign viewed at close range.

Document:

• Closest expected viewing distance
• Typical viewing distance
• Farthest useful viewing distance
• Pedestrian or vehicle audience
• Approximate viewing angle
• Expected traffic direction
• Typical content type
• Text size and message complexity
• Static graphics, scheduled messages or video
• Daytime and nighttime operation
• Any owner-defined image-quality expectation

Viewing distance can help narrow the pixel-pitch range, but it should be treated as one design input rather than a universal conversion formula. Character height, message duration, viewing angle, sign height and content design also influence readability.

If the owner has already requested a particular pixel pitch, mark it as either a fixed requirement or a preliminary preference. This distinction allows the supplier to flag a layout conflict without disregarding the project brief.

Record the Installation Environment

The same enclosure arrangement may behave differently depending on where and how it is installed.

State whether the sign will be:

• Indoors
• Outdoors and fully exposed
• Outdoors under partial cover
• Installed in a freestanding monument
• Mounted on a wall or pole
• Placed near landscaping or irrigation
• Exposed to dust, salt, moisture or other local conditions
• Subject to direct sun on one or more faces

The RFQ should also note the expected operating schedule. A display that runs for extended daily periods can create a different thermal load from one used only during limited hours.

Avoid assigning an enclosure protection level based only on a generic project label. Openings, doors, penetrations, drainage paths, ventilation and maintenance practices all affect the completed assembly.

Establish the Enclosure Layout

The module supplier needs to know how the LED components are expected to fit into the sign builder’s enclosure.

The RFQ should identify:

• Proposed module mounting method
• Flat or curved display surface
• Available mounting plane
• Internal obstructions
• Required alignment or tolerance concerns
• Space reserved for power supplies and controls
• Cable routing constraints
• Whether the enclosure design can still change
• Which party will prepare the final module layout

Do not assume that the visible opening can be filled by cutting standard LED modules to match it. The supplier should confirm a layout based on complete compatible components and the proposed active area.

For double-sided signs, document each face separately. The two sides may share an enclosure but still require separate module counts, cable routing, thermal planning and service access.

Document Ventilation and Drainage

The completed sign enclosure must manage the heat produced by modules, power supplies and control equipment while also addressing moisture and contamination risks.

The RFQ does not need to prescribe a universal vent size. It should provide the information needed for thermal and enclosure planning:

• Enclosure material
• Internal clear volume or dimensions
• Expected display orientation
• Location of proposed air inlets and outlets
• Natural or assisted airflow concept
• Fan or filter constraints
• Drainage provisions
• Nearby walls, landscaping or architectural features that may restrict airflow
• Local exposure conditions
• Space around power and control equipment

Ventilation and weather protection must be evaluated together. An opening that improves airflow may also create a path for water, dust or insects if the enclosure detail is incomplete.

The sign builder should identify who is responsible for the final thermal design. The module supplier can provide equipment information and layout guidance, but the completed enclosure conditions still need to be reviewed as part of the sign design.

Define the Electrical Inputs

A request for “standard power” leaves too much room for interpretation.

The RFQ should record the available or planned electrical service and clearly distinguish confirmed information from assumptions.

Include:

• Available supply voltage and frequency
• Single-phase or other project-specific supply arrangement
• Existing service or new circuit
• Location of electrical entry
• Disconnect location
• Grounding and bonding provisions
• Space available for power supplies
• Preferred power-supply mounting area
• Cable-routing limitations
• Responsibility for branch circuits and field wiring
• Applicable project documentation requirements

Where the electrical service has not yet been confirmed, mark it as pending rather than entering an estimated value as a final requirement.

The supplier can then identify which recommendation depends on that missing information. Final electrical design and installation should be confirmed by the qualified project parties and the relevant authority for the installation location.

Describe the Control and Communications Plan

The RFQ should explain how content will reach the display and who will operate it.

Record:

• Local or remote content management
• Preferred communication method, if already selected
• Available wired network connection
• Cellular or wireless constraints
• Distance between the controller and display
• Proposed controller location
• Number of display faces
• Mirrored or independent content by face
• Content source and file workflow
• Required user access or account arrangement
• Responsibility for commissioning and training

If the communication method has not been selected, describe the site conditions instead of requesting a specific solution by guesswork.

For example, state whether a wired network is available, whether trenching is planned, whether cellular coverage has been checked and where the control equipment can be protected and serviced.

Plan Service Access Before Fabrication

Service access affects enclosure depth, doors, mounting positions, cable slack and the placement of power and control equipment. It should be settled before the enclosure is released for fabrication.

The RFQ should state:

• Front, rear or internal service approach
• Access-panel locations and dimensions
• Clearance around the sign
• Whether a technician can reach each component
• How modules will be removed
• How power supplies and control equipment will be reached
• Whether landscaping or architectural finishes will obstruct access
• Whether service requires lifting equipment or traffic control
• Preferred spare-component storage arrangement

A service label such as “front access” is not enough by itself. The drawing should show how the technician reaches and removes the component without damaging the enclosure finish or adjacent modules.

For retrofit projects, include photos of the existing access points and internal conditions.

Attach the Right Supporting Files

A structured RFQ becomes more useful when its attachments confirm the written information.

Recommended attachments include:

• Dimensioned front elevation
• Side or section drawing
• Enclosure detail
• Site photographs
• Existing sign photographs for retrofits
• Electrical information
• Communication-path sketch
• Architectural rendering
• Permit drawing, when available
• Content examples
• Relevant project specification pages
• Revision history

Photographs should show context as well as detail. A close-up of the enclosure is useful, but a wider image can reveal access restrictions, landscaping, nearby structures and the probable service route.

Name files consistently and list their revision status in the RFQ. Conflicting drawing revisions can be as disruptive as missing drawings.

Separate Confirmed, Proposed and Pending Inputs

One of the simplest ways to improve an RFQ is to label the status of each field.

Use three categories:

• Confirmed: verified by drawing, site measurement or project requirement
• Proposed: current design direction, open to supplier review
• Pending: information still required from the owner, electrician, engineer or site survey

This prevents preliminary assumptions from being treated as final requirements.

It also allows the supplier to respond more precisely. A recommendation can be issued subject to specific pending items rather than being based on hidden assumptions.

Identify Responsibility Boundaries

The RFQ should clarify who is responsible for the work surrounding the supplied LED components.

Typical responsibility areas include:

• Enclosure design
• Structural design
• Module layout
• Internal mounting system
• Thermal management
• Branch-circuit design
• Internal wiring
• Grounding and bonding
• Communication service
• Control-system setup
• Content configuration
• Installation
• Commissioning
• Permit documents
• Final inspection support

This section is especially important when the sign company expects more than component supply. A supplier quotation may include hardware recommendations while excluding enclosure engineering, field electrical work or permit approval.

Clear responsibility boundaries reduce gaps between the quotation, fabrication package and installation plan.

Check RFQ Readiness

Before sending the request, review whether the available information is sufficient for the recommendation being requested.

Ready for Layout Review

The active display dimensions, orientation, service method and enclosure constraints are documented. The supplier can evaluate module arrangement and identify dimensional conflicts.

Ready for Preliminary System Recommendation

Viewing conditions, installation environment, electrical inputs, control needs and operating assumptions are available. The supplier can prepare a preliminary system recommendation with stated conditions.

Ready for Firm Quotation

Quantity, supply scope, approved dimensions, project location, electrical conditions, attachments and delivery requirements are confirmed. Remaining exclusions and responsibility boundaries can be stated clearly.

Hold for Missing Inputs

Pause the RFQ if any of the following prevents a meaningful recommendation:

• Active display dimensions are unknown
• Overall enclosure and internal clear dimensions are being confused
• Service method has not been selected
• Installation environment is unclear
• Available power is unknown
• Single-sided or double-sided configuration is undecided
• Control and communication responsibilities are undefined
• Drawings conflict with the written dimensions
• Supply scope is unclear
• Quantity or delivery destination is missing

A preliminary budget request can still be issued when information is incomplete, but it should be labeled as budgetary and should list the assumptions that may change the final quotation.

Copyable LED Module RFQ Template

The following structure can be copied into a spreadsheet, form or project-management system.

1. Project Information

• Project name:
• RFQ reference:
• Sign company:
• Contact person:
• Project location:
• New construction or retrofit:
• Indoor, outdoor or sheltered:
• Single-sided or double-sided:
• Required quantity:
• Requested supply scope:
• Quotation due date:
• Delivery destination:

2. Display Dimensions

• Overall enclosure width:
• Overall enclosure height:
• Overall enclosure depth:
• Visible opening width:
• Visible opening height:
• Active display width:
• Active display height:
• Internal clear depth:
• Fixed dimensions:
• Adjustable dimensions:
• Units:
• Drawing revision:

3. Viewing and Content

• Closest viewing distance:
• Typical viewing distance:
• Audience movement:
• Viewing angle:
• Sign mounting height:
• Primary content type:
• Typical text size:
• Daytime operation:
• Nighttime operation:
• Requested pixel pitch:
• Pixel pitch status, fixed or proposed:

4. Enclosure and Environment

• Enclosure material:
• Mounting surface:
• Internal obstructions:
• Sun exposure:
• Weather exposure:
• Dust or salt exposure:
• Irrigation or water exposure:
• Ventilation concept:
• Drainage provisions:
• Space for power and controls:

5. Electrical Information

• Supply voltage:
• Frequency:
• Existing or new service:
• Electrical entry location:
• Disconnect location:
• Grounding and bonding status:
• Power-supply mounting area:
• Field-wiring responsibility:
• Electrical information status:

6. Controls and Communications

• Local or remote management:
• Available network connection:
• Communication preference:
• Controller location:
• Distance to display:
• Mirrored or independent faces:
• Commissioning responsibility:
• User-training requirement:

7. Service and Maintenance

• Front, rear or internal service:
• Access-opening dimensions:
• Module removal path:
• Power-supply access:
• Control-equipment access:
• Clearance restrictions:
• Lifting-equipment requirement:
• Spare-component plan:

8. Attachments

• Front elevation:
• Side section:
• Enclosure drawing:
• Site photos:
• Existing sign photos:
• Electrical information:
• Communication sketch:
• Content examples:
• Project specification:
• Revision list:

9. Responsibility Matrix

• Enclosure design:
• Structural design:
• Module layout:
• Thermal design:
• Electrical design:
• Internal wiring:
• Communication service:
• Installation:
• Commissioning:
• Permit documentation:

10. Input Status

For each field, mark:

• Confirmed
• Proposed
• Pending
• Not applicable

Questions to Resolve Before Quoting

Can the supplier quote from the overall sign size?

The overall sign size alone is usually insufficient. The supplier also needs the intended active display area, visible opening, internal clear dimensions, structural obstructions and service approach. These details determine whether a complete module layout can fit inside the enclosure.

Should the sign company specify pixel pitch?

The RFQ can include a requested pixel pitch, but it should indicate whether that value is fixed or open to review. Viewing conditions, content, display dimensions and project expectations may support a different recommendation.

What information affects the control recommendation?

The supplier generally needs to know the display dimensions, number of faces, whether each face shows the same content, controller location, communication options and content-management expectations. A module count alone does not define the complete control arrangement.

What if the enclosure is still being designed?

Label the dimensions and service method as proposed. Identify which dimensions can change, attach the latest drawing and ask the supplier to flag layout or access conflicts before the enclosure is released for fabrication.

Can several suppliers receive the same template?

Yes. A consistent RFQ structure makes supplier responses easier to compare because each supplier is working from the same dimensions, scope and project assumptions. Differences in exclusions and recommendations can then be reviewed directly.

Conclusion

A dependable module quotation starts with a defined project scope and a documented enclosure, not with a single requested pixel pitch. When the sign company records the display area, viewing conditions, environment, electrical inputs, ventilation, controls, service access and responsibility boundaries, the supplier can identify conflicts before they reach fabrication. Use the template as a project intake and readiness check, then send the RFQ only when confirmed facts, proposed choices and pending inputs are clearly separated.