Identify door and opener separately
The door sections and motor may come from different manufacturers. Keep a clear photograph of each accessible label with the installation paperwork. Do not climb onto the door, remove covers or work near loaded hardware to find a number.
Give the painter the correct product instructions
Finish preparation and permitted coating choices depend on the door material and factory finish. A general exterior-house paint specification may not suit the door. Confirm requirements before masking, sanding or coating begins.
Retain more than the model name
Keep available serial or product numbers, purchase information and the scope of the repaint. Those records help explain which surface treatment was applied later. They do not establish that an unknown door meets a particular performance requirement.
Your questions
Can a painted-over label be replaced from a photograph?
Ask the manufacturer what identification or replacement-label process is available. Do not create an unofficial performance label yourself.
Does the opener brand tell me who made the door?
No. Treat the motor and door as separately identified products when seeking manuals or replacement parts.