I got the N. rajah, hamata, inermis and lowii at the same time (June 2002) all were about 6-8 (3") cm in diameter except the hamata which was about 10cm (4") in diameter.
My highland plants have a continuous flow of cool air that is humidified with an ultrasonic humidifier before it reaches the tank. The air comes from outside a window (except in winter it's too cold so the "in" fan sucks cold air from the inside surface of the shut window). My cooling/air flow setup is simply a 4" flexible duct tube from home depot attached to a 4" Computer Fan *from radio shack. When it gets too hot in summer for natural nightime temps to cool it (june-august) I just set the input fan in front of my air conditioner and that takes care of it.
The netting is heavy plastic poultry netting ("chicken wire") this allows me to hang small neps til they get too big (basically it's just a space saver) plus many of my orchids are mounted on cork bark panels or tubes and "hydrologs" so I can hang them from hooks this way. Neps aren't the best for doing this as they can fall out of their pots if they get too long. If the pitcher tendrils grab the netting then it's ok and is more stable. If you have many tiny Neps though it can really be a lifesaver until you design a new enclosure. I haven't seen the person ("Arie" from Israel) make any posts in a while but he/she showed their terrarium completely filled with pots hanging like this. I hope the netting never got loose cos I could well image the $$$ lost of they all came crashing down! [img]http://www.**********.com/iB_html/non-cgi/emoticons/wow.gif[/img]
If you have large neps in hanging baskets I guess my thought would be build a large enclosure and instead of a bench just run some 1" steel pipe lengthwise through the enclosure about 6-12" below the lid and then hang them inside from the pipes. I have one nep in a hanging basket in my lowland showerstall hanging that way and it seems to work well. Don't forget to measure the diameter of your plants and make space for them if they aren't full size cos I've noticed pitchers that sit on terrarium and enclosure walls will die faster or even rot before they form (due to wetness) so I like to leave a bit of space so the plants are not touching the walls at all.