Building materials · Reference
Standard single-car garage doors are 8, 9 or 10 ft wide and double-car doors 16 or 18 ft wide, both usually 7 ft tall (8 ft optional). Most common: 9 × 7 ft and 16 × 7 ft.
Garage doors are specified as width × height; standard residential heights are 7 ft and 8 ft.
| Door type | Standard width | Standard height | Most common |
|---|---|---|---|
| Single-car | 8, 9 or 10 ft (2438–3048 mm) | 7 ft (2134 mm); 8 ft option | 9 × 7 ft |
| Double-car | 12, 14, 16 or 18 ft (3658–5486 mm) | 7 ft (2134 mm); 8 ft option | 16 × 7 ft |
| RV / oversized | up to 16 ft (4877 mm) | up to 14 ft (4267 mm) | 16 × 14 ft |
Source: OGD Overhead Garage Door — Complete Guide to Standard Garage Door Sizes
| Attribute | Standard value |
|---|---|
| Standard widths | 8, 9, 10, 12, 14, 16 and 18 ft |
| Standard heights (residential) | 7 ft and 8 ft |
| Section (panel) nominal heights | 18, 21 or 24 in (457–610 mm) |
Source: ANSI/DASMA 102 — Specifications for Sectional Overhead-Type Doors (2018)
| Door type | Common width | Common height |
|---|---|---|
| Single | 2134 mm (7 ft), up to 2438 mm (8 ft) | 1981 mm (6 ft 6 in) or 2134 mm (7 ft) |
| Double | 4267 mm (14 ft) or 4877 mm (16 ft) | 2134 mm (7 ft) |
Source: Build4less — Garage Door Sizes in the UK: A Comprehensive Guide
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Single-car doors are typically 9 × 7 ft (2743 × 2134 mm) and double-car doors 16 × 7 ft (4877 × 2134 mm). 8 ft-tall versions are widely available.
Standard double-car doors are 16 or 18 ft wide (4877–5486 mm); some run 12–14 ft. 16 ft is the most common.
RV and oversized doors go up to about 16 ft wide and 14 ft tall; 12 × 12 ft and 14 × 14 ft are common for larger motorhomes.
Standard tracks need 12–15 in of headroom above the opening plus at least 3 3/4 in of side room each side; low-headroom kits reduce this.
Common UK single doors are 2134 mm (7 ft) wide × 1981–2134 mm high; doubles are 4267 mm (14 ft) or 4877 mm (16 ft) wide.
Every figure on this page is traced to a named source, linked under each table. Standard sizes come from published standards and established industry references; where a size is a typical range or varies by manufacturer, we say so. Sizes vary by region, model and revision — treat these as the standard reference, and confirm the exact spec of the item you are selling.
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