heavy duty trap door hinge 

 SGS Certification of 180 degree conceal door hinge  Product Description   Product details  Product Name: 3-way adjustable concealed hinge   Features   • 3 WAY adjustment function allows vertical, horizontal.And deep adjustment after hinge installed   •  Easy installation/removal   •  Successfully passed 200,000 open/close private  cycles tests   •  Surface treatment : Matt chrome /Golden   Supplied with stainless steel flat head scre…