Dimensions of 125w vs. 200w vs. 250w Envirolite/CFL?

I searched for a long time and can't find the dimensions of these lights online. I am building a compact grow in my nightstand and want the most powerful CFL/Envirolite but need to make sure it will fit.

If anyone has the dimensions of these lamps by measuring their own or linking one that would be a huge help.

Thanks everyone!

Included pics so you know which lamps I mean, just looking for dimensions on the different models and watts.

http://www.plugandgrow.co.uk/files/tech_spec.pdf

16.06 Inches!

Thanks a lot, so no matter the wattage they're all the same size?

If so, that's perfect!

yes,same size