As a door and window manufacturer, we approach these specifications daily. Our factory in China produces solid wood doors, thermal-break aluminum doors and windows, and custom system doors for projects across North America, Europe, and beyond. When buyers send us their opening schedules, we work through exactly the characteristics described above—confirming dimensions, material performance, glazing specifications, and hardware requirements against local building codes.
Because we are the direct manufacturer, we can adjust profile structures and fittings to match your target market’s standards rather than offering only a fixed product line. If your project requires specific dimensions, custom glazing, or particular hardware accessories, those are accommodated during production, not as an aftermarket modification. Our pre-shipment inspection includes air-tightness, water-tightness, and wind resistance testing so the performance data we provide reflects the actual product you receive.
For buyers managing multiple projects, we supply full documentation including packing lists, proforma invoices, and customs paperwork, with both FCL and LCL shipping options. If you are specifying doors and need assistance translating your requirements into a manufacturable product, contact our team with your opening schedule or project drawings.
Frequently Asked Questions
What is the difference between door height and door width?
Door height is the vertical dimension from the bottom edge to the top edge of the door slab. Door width is the horizontal dimension across the face of the door. Standard interior doors are 80 inches high and 28–36 inches wide. Exterior doors are typically wider (32–36 inches) and thicker to accommodate weather sealing and security hardware.
How do I measure the area of a door?
Multiply the door width by the door height. For a standard 36-inch by 80-inch door, the area is 36 × 80 = 2,880 square inches, or 20 square feet. For glazed doors, manufacturers typically report the glazing area separately because building codes limit the percentage of glazing in fire-rated assemblies.
What is a sidelite on a door?
A sidelite is a narrow, fixed glazed panel installed beside a door, either on one side or both. Sidelites extend the visual width of the entrance and allow additional natural light into the interior while maintaining a single operable door leaf for daily use.
What does “thermal break” mean in aluminum doors?
A thermal break is a non-conductive material (usually polyamide) that separates the interior and exterior aluminum profiles of a door frame. Because aluminum conducts heat readily, without a thermal break the frame acts as a thermal bridge, transferring heat or cold between the interior and exterior. Thermal-break construction significantly improves the door’s overall insulation performance.
What is the lip of a door?
The lip is the projecting overlap on the meeting edge of a door, typically found on double doors where two leaves close together. The lip ensures a tight fit between the doors and provides a surface for weatherstripping, which prevents air and water infiltration at the meeting point.
Are energy-efficient doors eligible for financing or tax credits?
Yes, in many jurisdictions. In the United States, the Inflation Reduction Act provides tax credits for qualifying energy-efficient exterior doors through 2032. Eligibility requires the door to meet ENERGY STAR program requirements. Utility companies in many regions also offer rebates for energy-efficient door replacements. Check with local authorities for programs applicable to your area.
