I'm only seeing the 2 foot length, Jack... Perhaps if you contacted them... Francis most likely has their number .
Janie
The number is on their site, they no longer make the 4 foot version of this light (hence only two foot). By the way I live about 10min drive from the shop quite handy. The owner Brian Barnett (well i can't really speak enough of this bloke) is a wealth of resource and knowledge. He is one of the founding leaders of heptoculture in OZ, he has been doing this since the 50's and was the President of the Victorian Herpetological Society for decades.