Inquiry (采购产品): Swinging Doors Hi, We have your doors throughout the bakery and some aren't working properly. My question is: are they gravity return or spring loaded return? And what is in the little plastic boxes hanging on the hinge side? Thanks, Hank **** Hidden Message ***** Hank Kuehne 07072 Company: Tribeca Oven E-mail: hank@tribecaoven.com **** Hidden Message ***** hank@tribecaoven.com