Side by side.

Specification	ED-5350 ED-5350 Quote
Width	0.545"
Height	3.400"
Flange	0.125"
Material	Rubber
Type	Sponge
Durometer	2A3 (sponge grade)
Colour	Black
Mount	Push On
Core	SD-487 Spring Steel

Spec sheets live on each part's page.