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Guardian / Garage door opener / Model guide

Guardian 415-3T: sectional rail kits and the correct manual

415-3T uses a separately ordered sectional rail kit, with explicit limits on other Guardian rails.

Match the model before choosing a document

Identifier: 415-3T. Keep every letter and suffix on your product label when checking applicability.

Guardian specifies sectional rail kits for 415-3T and says standard Guardian single-piece rails are not compatible.

The powerhead and rail are ordered separately. G3TKIT is listed for 7-foot doors; G3TKIT-8 is listed for 8-foot doors.

Keep the 3T suffix on support requests. The 415 manual and a general Guardian rail listing do not replace the 415-3T manual.

Documented specifications

Values apply to the configuration named in each row. Follow the source for its exact scope.
Motor1/2 HP ACSource: Guardian 415-3T specifications · Description
DriveChainSource: Guardian 415-3T specifications · Description
7-foot rail kitG3TKITSource: Guardian 415-3T specifications · Packaging Contents
8-foot rail kitG3TKIT-8Source: Guardian 415-3T specifications · Packaging Contents
Standard Guardian single-piece railNot compatibleSource: Guardian 415-3T specifications · Features

Official documents & support

These links open the manufacturer’s document or support page. Manuals are hosted by their issuer.

Filter the documents listed below by model or document type. A match is not confirmation of your unit’s revision or installed accessories; read the scope note before using a document.

1 of 1 listed documents shown.

  • owner manual

    Cover identifies 415-3T and shows separate powerhead and rail cartons; match the exact suffix.

    Models: 415-3TenDocument: REV0322; GDOMU010A-1United States

Parts & related references

Match the exact model and source conditions before choosing a part. Conditional statements and explicit exclusions do not confirm a fit. Open a row for its exact pairing and source.

  • Guardian G3TKIT: 7-foot sectional rail kit for 415-3T

    G3TKIT is the sectional chain-rail kit named for nominal 7-foot doors with the exact 415-3T opener. The powerhead and rail are separate; standard one-piece Guardian rails are excluded.

    Exact pairing & sources for G3TKIT · Conditional

    G3TKIT is directly named for 415-3T within the stated source conditions.

    From G3TKIT to 415-3T

    Applies only within this source scope
    • Market: US
    • Model scope: 415-3T
    • Nominal 7-foot door-height rail kit; confirm the actual door/site requirements.
    • Use the exact 415-3T model with its separately ordered sectional rail; standard Guardian single-piece rails are excluded.
    • Source 1: ADH Guardian USA LLCGuardian 415-3T product specifications · Packaging Contents: exact G3TKIT and 7-foot door kit; Features: sectional rail requirement · checked 2026-09-11
  • Guardian G3TKIT-8: 8-foot sectional rail kit for 415-3T

    G3TKIT-8 is the sectional chain-rail kit named for nominal 8-foot doors with the exact 415-3T opener. The powerhead and rail are separate; standard one-piece Guardian rails are excluded.

    Exact pairing & sources for G3TKIT-8 · Conditional

    G3TKIT-8 is directly named for 415-3T within the stated source conditions.

    From G3TKIT-8 to 415-3T

    Applies only within this source scope
    • Market: US
    • Model scope: 415-3T
    • Nominal 8-foot door-height rail kit; confirm the actual door/site requirements.
    • Use the exact 415-3T model with its separately ordered sectional rail; do not drop the -8 kit suffix.
    • Source 1: ADH Guardian USA LLCGuardian 415-3T product specifications · Packaging Contents: exact G3TKIT-8 and 8-foot door kit; Features: sectional rail requirement · checked 2026-09-11

Before applying these details

  • Rail selection and installation must also match the door and site conditions.

Sources & scope

  1. Guardian 415-3T specificationsGuardian Access & Door Hardware · checked 2026-09-11
  2. Guardian 415-3T owner manualGuardian Access & Door Hardware · checked 2026-09-11 · REV0322; GDOMU010A-1

Anderson prepared this independent reference from the listed sources. It is not the manufacturer’s official support site, an installation inspection or a product test. Current stock, parts availability and warranty entitlement are not established by a listing.

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Selected service: Opener repair. You can change this. Reason: Equipment: Guardian 415-3T: sectional rail kits and the correct manual.

If the door is crooked or partly open, keep clear. Do not adjust springs or cables yourself.

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