Electrical Firestop System Lookup and Record Guide
Find a documented firestop system by barrier and penetrant conditions, compare the complete design, and download a blank system-selection record for review.
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Collect the opening conditions
A through-penetration firestop design describes a tested system with defined construction and installation conditions. A sealant product name or a red material at an opening is not the system design. Start with the rated barrier and every penetrant through it.
| Condition | Information to collect | Why it matters |
|---|---|---|
| Barrier | Wall or floor reference, construction, thickness and required rating | A design for one assembly is not automatically valid for another. |
| Penetrants | Conduit material and size, cable types/bundles, tray or mixed contents as applicable | System scope depends on the described penetrant arrangement. |
| Opening | Shape, dimensions, annular-space range and actual location | The opening must fit the design conditions, not just admit the cable. |
| Required performance | Project-specified ratings and any smoke, water or other stated requirements | A single advertised hour value does not capture every required characteristic. |
| Documentation | Approved drawings, specification and responsible review route | Defines which system and revision are accepted for the project. |
Find and read a system design
- Use an official certification directory or the manufacturer's documented system finder, using the barrier and penetrant conditions collected above.
- Retrieve the complete design and its identifying system number; do not work from a cropped sketch or a product advertisement.
- Read the permitted materials, dimensions, supports, packing, fill depths and installation details for that exact system.
- Compare the actual opening against every relevant condition and the project requirements.
- Retain the approved design revision and refer a mismatch through the project's firestop review process before installation or alteration.
UL system identifiers help organize designs, but the number is an index into the complete design. It cannot replace the design text. Different ratings and optional materials may have separate conditions within the same document.
If no listed design matches, record the discrepancy and request the appropriate documented project resolution. This guide does not create an engineering judgment, approve a deviation, or tell a user to substitute one manufacturer's material for another.
Compare the complete detail
| Part of the design | Compare with the actual opening | Record a mismatch explicitly |
|---|---|---|
| Barrier and rating | Assembly construction, thickness, orientation and required performance | Different wall/floor construction or unverified assembly rating. |
| Penetrant configuration | Material, size, cable fill/bundle limits, tray and number of penetrants | Extra cable, different conduit or mixed penetrants outside the design. |
| Opening and spacing | Opening size and permitted annular space or contact conditions | Oversized opening or spacing outside the documented range. |
| Firestop materials | Exact named products, packing and required installed depths | A similar-looking material or undocumented product substitution. |
| Support and arrangement | Supports and other conditions specified by the design | An omitted detail or a support condition not yet verified. |
| Performance designations | Relevant F/T and any L/W ratings as defined for the system | Assuming one rating automatically supplies all other performance. |
The comparison is a document review aid. It does not supply missing dimensions, material quantities, cure conditions or installation instructions. Use the complete selected design and the product instructions for the actual work.
Keep a selection record
Download a blank firestop system record (CSV)
Opening identity, assembly and penetrants, selected system, design revision, comparison notes and approval references. No preselected design or acceptance result.
Assign a stable opening ID and record the selected system number, document revision, review reference and inspection/photo records. Keep the original record when a later cable addition changes an opening: added contents must be reviewed against the applicable design rather than treated as a cosmetic sealant repair.
The blank record is an editable document. It is not a design, installation certificate or inspection approval. Use the job card for unresolved work, the conduit dimension reference only within its published scope, and the cable-tray worksheet for its separate fill task.