30 x 79 Interior Door: Sizes, Fit & Selection Guide

Is a 30 x 79 interior door standard or custom? Learn rough opening sizes, height variations (72"–82"), and how to choose the right door for your project.

How We Meet These Standards: Factory-Direct Custom Doors

As a manufacturer of interior doors, we regularly produce non-standard sizes like the 30 x 79 door discussed throughout this guide. Our approach is straightforward: we build to your opening, not to a generic standard.

When you order from us, you work directly with the factory. This means the size you specify is the size we produce—whether that is a 30 x 79 slab, a 30 x 74 prehung unit, or a fully custom dimension for a commercial project. Our production line handles custom sizing as routine work, not as a special exception.

We also provide the documentation that project buyers need. Every order includes a packing list, proforma invoice, and full customs documentation for international shipments. Our pre-shipment inspection covers dimensional accuracy, air-tightness, water-tightness, and wind resistance—checks that matter when you are ordering in volume and cannot inspect each unit yourself.

For buyers sourcing doors for renovation projects or new construction, we offer OEM and ODM services. If your project requires a specific profile structure or fittings to match local building codes, we can adjust the design accordingly. We ship both FCL and LCL, depending on your order volume.

If you are comparing suppliers for a project that involves non-standard door sizes, send us your opening dimensions and quantities. We will confirm whether your sizes can be produced as stock items or need custom tooling, and we will give you a lead time based on our current production schedule.

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