Side by side.

Specification	DU-030 DU-030 Quote
Width	0.588"
Height	0.760"
Material	Rubber
Type	Sponge
Durometer	2A3 (sponge grade)
Colour	Black
Mount	Tape
Bulb position	Top
Tape	3M Heat-Activated Tape

Spec sheets live on each part's page.