Side by side.

Specification	DU-069 DU-069 Quote
Width	0.709"
Height	1.429"
Flange	0.300"
Material	Rubber
Type	Sponge
Durometer	2A3 (sponge grade)
Colour	Black
Mount	Push On
Bulb position	Top
Core	1.43in Wire

Spec sheets live on each part's page.