Measuring guide
How to Choose the Right Sliding Gate for Your Property
Thinking about installing a sliding gate to update your entrance, save space, or secure your property? This guide walks you through how to measure for a sliding gate step by step, highlights common mistakes to avoid, and helps you select the best gate for your outdoor space.
1. Measure the Width Between the Posts

Measure the inside distance between the two posts at three different heights:
Why three measurements? Posts may not be perfectly parallel—especially on older installations or if they've shifted over time.
Record the smallest of the three measurements—this is the usable width for your gate.
If the difference between measurements is more than 1 cm, check the alignment of your posts before installing. For example: If you measure 3.03 m at the top, 3.01 m in the middle, and 3.02 m at the bottom, use 3.01 m as your reference width.
2. Measure the Height from the Ground to the Underside of the Post Cap
Next, measure the total available height from the finished ground up to the bottom of the post cap (or cover).
- • Take the measurement on both sides, as the ground may not be perfectly level.
- • The final gate height should be 2 to 4 inches (5 to 10 cm) less than the available height to allow clearance for hinges and smooth operation.
Check that the rack and gate motor (if used) will fit without interfering with the gate's height.

3. Plan for Side Clearance
A sliding gate opens to the side, so you’ll need enough space on one side of the opening.
Clearance = gate width + at least 20 inches (50 cm).
This extra space is needed for the rack, motor (if automated), and end stops.
4. Check Ground Alignment and Level
Before installing a sliding gate, make sure the ground is flat and stable. If the surface isn’t level, the gate may drag, jam, or wear out faster.
The base should be solid, with no holes or bumps—even small uneven spots can cause issues. If needed, pour a straight concrete pad (called a threshold) along the full width of the opening.
If your driveway is sloped, consider a cantilever gate (which doesn’t require a ground track) or adjust the concrete to create a level base. Always check with a laser or bubble level before installation to ensure everything is straight—this helps your gate slide smoothly and last longer.
Summary:
Measure the width between posts at the top, middle, and bottom. Use the smallest value.
Measure the gate height from the ground to the post cap.
Allow for side clearance at least equal to the gate width plus 20 inches (50 cm).
Check that the ground is flat and stable. If not, install a level concrete threshold.
If you’re unsure, contact a professional for on-site measuring—this ensures the best possible fit and operation.
A question about this product?
Bordeaux Aluminum Sliding Gate 3.5m or 4m Opening - 1.7m Height - Gray
Whether you prefer manual operation or want to add a gate opener, this sliding gate is a smart choice for narrow driveways or sloped lots. Its sleek, modern design fits seamlessly with any outdoor style. For a coordinated look, pair it with the matching garden gate or opt for the Bordeaux swing gate.
Guaranteed cheapest product on the web
Found it cheaper elsewhere? We'll refund the difference.
Made in
France & Europe
Flexible Payment Options
10-Year
Anti-Corrosion Warranty
Home delivery
or in-store pickup
Choosing the right gate is essential for your property—it’s the first thing people notice about your home. The Bordeaux aluminum sliding gate offers both security and added value for your entrance. Its solid construction helps shield your yard from prying eyes, making it an excellent option for urban settings.
The aluminum sliding gate is a reliable solution. Finished in anthracite gray with clean, modern lines, it provides privacy unlike openwork gates.
Aluminum is known for its strength, minimal maintenance, and lightweight properties. This ready-to-install gate is easy to set up and handle.
QUALITY LABELS:
Qualicoat | Qualimarine | Qualanod
This kit includes
x1
Guide bracket
x1
End stop
x1
Latch receiver
x1
European cylinder lock with black powder-coated aluminum handle
x1
Galvanized steel bolt-on track
Benefits of the aluminum sliding gate
- Ready to install: quick and straightforward setup
- Weather and corrosion resistant
- 10-year warranty: premium quality
How to install an aluminum sliding gate
First, measure the opening for your sliding gate, whether manual or motorized. Be sure to add about 20 inches of clearance beyond the width between your posts. Our aluminum gates are available in various widths to suit different layouts.
Additional information
Finished height: 1.77m
Manual or motor-ready (reinforced bottom rail)
Reversible opening (left or right)
Reinforced bottom rail
Weather and corrosion resistant
Aluminum frame: mortise and tenon mechanical assembly for added strength
Lightweight profile
Powder-coated finish
Sanded and chemically treated
Factory pre-assembled
Available colours
Gray 7016
Data sheet
- Width
- 3m50 ou 4m00
- Weight
- 80 kg
- Height
- 1m70
- Post profile
- 80x45 mm
- Rail Size
- 80x35 mm
- Bar Spacing
- 70x16 mm
- Thickness
- 2 mm
- Material
- Aluminum
- Application
- Residential
- Lock Type
- Manuel ou motorisable
- Warranty
- 10 years
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For a 3.5m opening, we recommend an aluminum sliding gate. This type of gate provides ample clearance for vehicles and doesn't take up extra space when open. Sliding gates are ideal for sloped driveways or entrances where swing space is limited. Aluminum is lightweight, weather-resistant, and low-maintenance. You can also add an automatic gate opener for added convenience.
To automate your aluminum sliding gate, start by selecting a gate opener kit that matches the weight of your gate. Attach the rack to the reinforced bottom rail, install the motor on the ground, and connect it to the power supply. Our gates are designed with reinforced frames, making it easy to add an opener later for greater convenience.
For a 3.5m sliding gate, choose an opener that matches the weight of your aluminum gate (typically between 150 and 300 kg). Look for a rack-and-pinion motor with enough power, such as CARDIN or CAME models available at Cloture-discount.fr. Make sure the opener is compatible with your electrical setup, and consider a system that includes a remote control, photoelectric sensors, and an emergency stop for added safety with your sliding aluminum gate.
A sliding gate requires a clear lateral space equal to its width to open fully, which means you’ll need about 13 feet for a 12-foot gate. Sliding gates also tend to cost more than comparable swing gates, and installation involves concrete work to lay a foundation and set the ground track.
Standard sliding gate sizes
Sliding gates come in several standard widths to fit most residential driveways:
- 3m sliding gate: Compact option, ideal for properties with limited space
- 3.5m sliding gate: A great balance between functionality and adaptability
- 4m sliding gate: The most popular size, provides a generous opening
- 5m sliding gate: Best for wide entrances and larger properties
Key factors to consider
1. Type of vehicles
Think about your daily needs:
- Standard car: 3m is usually sufficient
- Utility vehicle or trailer: 3.5m or 4m is recommended
- Multiple vehicles at once: Choose at least 4m
2. Your property layout
Side clearance: A sliding gate needs clear space along the fence line equal to the gate width plus about 20 inches for safe operation. For a 3.5m gate, plan for roughly 4 meters of lateral space.
Sloped driveways: Sliding gates are especially suitable for sloped properties where swing gates are difficult to install.
Limited depth: If your driveway is shallow, a sliding gate saves space by not swinging into your yard or driveway.
3. Measuring your opening
Measure the distance between your gate posts in three places:
- Top
- Middle
- Bottom
Use the largest measurement and add 2 to 4 inches for installation clearance.
Gate size recommendations by property size
Small lots: A 3 meter gate provides enough access while maximizing available space.
Medium lots: 3.5m is the most versatile choice for most residential driveways.
Large lots: 4m or 5m gates offer easy access and enhance your property's entrance.
Check local regulations
Review your area's zoning or building codes before installation. Some neighborhoods may have rules about:
- Maximum allowed height
- Approved colors and materials
- Gate placement relative to the street
Expert tips from Districlos
When in doubt, choose a gate slightly wider than your current needs. A 3.5m sliding gate is a flexible option, making it easy to maneuver any vehicle and fitting most property layouts.
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