Here are couple new BW pipe options. They're basically half of the normal BW inflow/outflow pipes. The concept is for them to be used on standard braced/rimmed/hooded aquariums where the normal pipes wouldn't fit.
They're available in 13mm and 17mm hose diameter.
Inflow (might work as a glass spray bar...)
I haven't gotten exact pricing info yet, but I'm estimating a price in the $80-$90 range each.