Social Security Disability back pay will be paid in a single lump sum and will be reduced by the amount of SSI already paid for months when eligibility for the two programs overlap. The second SSI installment is due this month, but sometimes the installments are delayed.
The medium flat-rate boxes for Priority service are 13 5/8 inches by 11 7/8 inches by 3 3/8 inches and 11 inches by 8 1/2 inches by 5 1/2 inches. Shipping charges are $12.65. There is one small-size box offered for Priority service. It measures 8 5/8 inches by 5 3/8 inches by 1 5/8 inches and costs $5.95 to ship.
Priority Mail. The USPS has introduced Flat Rate Priority Mail boxes. Basically whatever you can jam in the box you can ship for one price. So, if you box weighs 5 or 50 pounds you pay the same price.The priority mail boxes are free and are available at your local post office, or you can have them shipped to your door.The Priority Mail Flat Rate chart is below.o, if you box weighs 5 or 50 pounds you pay the same price. The priority mail boxes are free and are available at your local post office, or you can have them shipped to your door. The Priority Mail Flat Rate chart is below.