Common single-car garage doors are 8 or 9 feet wide; a common double-car door is 16 feet wide. Heights of 7 or 8 feet are common. The right size is the one that matches your opening and vehicle clearance, so measure before ordering.
Common residential sizes
| Use | Common width | Common height |
|---|---|---|
| Single-car opening | 8 or 9 ft | 7 or 8 ft |
| Wider single opening | 10 ft | 7 or 8 ft |
| Double-car opening | 16 ft; 18 ft for more width | 7 or 8 ft |
| Other openings | 12 or 14 ft and custom widths may be available | Depends on model |
A 12- or 14-foot door may be offered in a manufacturer's size chart, but that does not establish comfortable access for two vehicles. Door width also does not tell you the garage's interior parking width.
Door size and opening size
For a typical residential sectional door, the opening generally matches the nominal door width and height. Space for tracks and springs is measured separately beside and above it. Check the chosen manufacturer's framing instructions; do not add clearance to the opening by guesswork.
Record opening width and height, side room, headroom and the clear depth behind the opening. See 2-car garage door dimensions for the measurement checklist and Clopay's size guide for manufacturer guidance.
RV and tall-vehicle doors
There is no single standard RV opening. Measure the actual vehicle at its highest point, including roof equipment, and widest point, including mirrors. Confirm clearance through the opening and inside the garage. An 8-foot-high residential door is not a reliable starting height for an RV.
When a custom size is needed
An existing opening outside the selected model's size range, or a vehicle needing more height, may require a custom door or building changes. Have the installer confirm the opening and track arrangement before you order.
1A Garage Doors gives free estimates on new doors in the Sacramento area. Call (916) 838-8182 or see garage door installation.
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