1. 300mm mirror front led bulb is diameter 30mm and 300mm length, 255mm flexible soft led filament is in a “line” design inside the tube, the S14d lamp base is at the middle of the tube mirror front led bulb. It is 3W rated and 120lm light output with clear glass, because opal glass stops about 10-20% light output. Individual foam and box packing, safe shipping. We have Led mirror front lamp 300mm, 500mm and 1000mm, there are s14s and s14d.