Hinge Large
HarborFreight 12 in. Extra Heavy T-Hinge
https://www.harborfreight.com/12-inch-extra-heavy-t-hinge-65699.html $6.99
National Hardware 286BC 12" Zinc Plated Extra Heavy T Hinge
Stanley-National Hardware 12 in. Extra Heavy T-Hinge
https://smile.amazon.com/gp/product/B0002YRQDS/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 $12.35 + tax
http://www.homedepot.com/p/Stanley-National-Hardware-12-in-Extra-Heavy-T-Hinge-286BC-12-X-HVY-T-HNG-ZN/204218033 $12.35 + tax
More expensive version with removable pin...