If you mean a hinge that is just flexible plastic look up a natural hinge or living hinge. I don't know what boaphile uses but my hinged enclosures have that style on them.
http://www.iherp.com/mikel81
0.1 Eastern Garter
2.0 Corns (snow+black)
0.1 Brazilian Rainbow Boa
1.1 Jungle Carpet Pythons
1.1 Orangetail Hypo Het Anery Hog Island Boas
0.1 Super Jamp Retic Balls:
0.1 Normal
1.1 Lesser
0.1 Pinstripe
0.1 Mojave Orange Ghost
1.0 Orange Ghost
0.1 Cinnamon het Orange Ghost
1.0 Phantom