The amps don't really need that much ventilation...and the height can be designed any which way you want or need....
And yes, the racks are made to order for individual designs, are much less $ than other high end racks (starting at around 1 K) , can be painted or anodized with unlimited combinations of finish and wood choices, and, most important, sound good.....
If the word gets around as to how good they really are, and when compared to 5 K + racks, how much they hold their own, I'd never have the time to make amps again, heheheeeee
Martin, looks great, have fun .........