Abstract: Disclosed is a panel section intended for assembly with other equivalent panel sections as a section door. The panel section includes two sheets thermoformed together to define a panel, an attachment tab, a living hinge unitarily formed between the panel and the attachment tab, a receiver portion configured to receive the attachment tab of an equivalent panel section when assembled as a sectional door, a first bearing surface and a second bearing surface, where the second bearing surface is configured to bear against the first bearing surface on the equivalent panel section when assembled as a sectional door. Also disclosed are a method of thermoforming the disclosed panel section and a method of assembling the disclosed sectional door.