Side by side.

Specification	SD-12206-250 SD-12206 w/250 Quote
Width	0.790"
Height	0.900"
Flange	0.250"
Material	Rubber
Type	Sponge
Durometer	2A2 (sponge grade)
Colour	Black
Mount	Push On
Bulb position	Top
Core	1.120in Wire
Industries	Emergency Vehicles

Spec sheets live on each part's page.