Introduction: Measuring is the First Step to a Perfect Fit
Whether you’re building a new facility or replacing an old door, accurate measurements are key to ensuring your sectional door fits and functions perfectly. At NHentrance, we help clients around the world customize doors to match their industrial spaces—logistics centers, warehouses, factories, and workshops.
To make your ordering process smooth, we’ve created this easy-to-follow guide to help you measure your door opening like a pro.
1. Why Measuring Correctly Matters
A few centimeters can make a big difference. Wrong dimensions could result in:
- A door that doesn’t close properly
- Gaps that cause air leaks
- Installation delays and added cost
That’s why we always recommend following standard measurement steps before confirming your custom sectional door order.
2. Tools You Need
Before you begin, make sure you have:
- A steel tape measure (in mm or inches)
- A notepad or phone to record the data
- A ladder (if measuring a tall opening)
3. Three Key Measurements
Here are the three areas you need to measure:
A. Width (W)
Measure the clear opening width, from the left edge to the right edge of the frame. Measure at the top, middle, and bottom—take the smallest value.
B. Height (H)
Measure the clear opening height, from the floor to the lintel (top edge of the frame). Again, measure multiple points if possible.
C. Space Requirements for Tracks
Sectional doors need space for the track system. Please measure:
- Headroom: From the top of the door opening to the ceiling or lowest obstruction (at least 400mm recommended for standard lift)
- Side Room: From the edge of the opening to the wall (on both left and right sides)
- Backroom: From the opening inward along the ceiling—usually door height + 500mm is ideal
4. Lifting Systems and Space Matching
We offer different lifting systems based on your site conditions and how much space is available above and around the door. Here’s a general guide:
- Standard lift: A common solution for industrial settings with moderate ceiling space.
- High lift: Used when there is additional space above the door, but the opening height is still less than twice the door height. In this case, please provide the lintel height (distance from the door top to the ceiling).
- Vertical lift: Ideal when the opening height exceeds twice the door height. The door travels straight up along the wall.
Not sure which type fits best? Just send us site photos or a video—we’ll analyze and recommend the best solution.
5. Common Questions (FAQ)
Q: My opening isn’t square—what should I do?
A: Send us measurements of all four sides and corner diagonals. We’ll help you decide on adjustments.
Q: Should I deduct a few mm from my measurements?
A: No need! Just give us exact sizes. We’ll handle the fitting margins.
Q: What if there are pipes or beams above the door?
A: Take photos and measure their height from the ground. We’ll design around them.
6. What to Do After Measuring?
📩 Send us your:
- Width x Height
- Headroom / Side room / Backroom
- A few site photos (if possible)
We’ll take care of the rest—design, production, and international delivery.
NHentrance: Your Reliable Industrial Door Partner
With professional experience in door engineering and customization, NHentrance supports clients worldwide with:
- 1-on-1 measurement assistance
- Free drawings and recommendations
- Factory-direct pricing
✅ Measure once, install with confidence. Let us help you build the right door from the start.
📧 sales@nhentrance.com
📱 WhatsApp: +86 18915283688
🌐 www.nhentrance.com
