USPS® Priority Mail® Box Size Guide The table below shows options for different Priority Mail Boxes and Envelopes, along with dimensions, online postage pricing and weight options. PRIORITY MAIL BOXES Outside Outside Outside Online Box Image Description Box Box Box Postage Weight Packaging SKU Length Width Height Price Limit 10 pack Ships in O-BOX4 Non-Flat Rate Starts at Up to 7 1/4" 7 1/4" 6 1/2" packs of Small Cube Box $5.05 70 lbs. 10 or 25 25 pack O-BOX4X 10 pack Ships in O-BOX7 Non-Flat Rate Starts at Up to 12 1/4" 12 1/4" 8 1/2" packs of Large Cube Box $5.05 70 lbs. 10 or 25 25 pack O-BOX7X 10 pack Ships in 0-SHOEBOX Non-Flat Rate Starts at Up to 7 5/8" 5 1/4" 14 5/8" packs of Shoebox $5.05 70 lbs. 10 or 25 25 pack 0-SHOEBOX-X 10 pack Non-Flat Rate Ships in O-1097 Starts at Up to Small Box, 11 5/8" 2 1/2" 13 7/16" packs of $5.05 70 lbs. Side-Loading 10 or 25 25 pack O-1097X 10 pack Non-Flat Rate Ships in O-1092 Starts at Up to Medium Box, 12 1/4" 2 7/8" 13 11/16" packs of $5.05 70 lbs. Side-Loading 10 or 25 25 pack O-1092X Order USPS Supplies in Bulk! Call 1-800-610-8734. 10 pack Non-Flat Rate Ships in O-1095X Starts at Up to Small Box, 12 7/16" 3 1/8" 15 5/8" packs of $5.05 70 lbs. Side-Loading 10 or 25 25 pack O-1095 Ships in packs of 25 Non-Flat Rate Starts at Up to 25 pack 8 3/4" 5 9/16" 7/8" DVD Box $5.05 70 lbs. ODVDS Max order is 20 packs 10 pack Large Video Box Ships in O-1096L (about the size Starts at Up to 9 9/16" 2 3/16" 6 7/16" packs of of two VHS $5.05 70 lbs. 10 or 25 25 pack tapes) O-1096LX Ships in packs of 10 Small Starts at Up to 10 pack 25 5/8" 6 5/16" Triangle Tube $5.05 70 lbs. O-1098S Max order is 50 packs Ships in packs of 10 Medium Starts at Up to 10 pack 38 5/16" 6 9/16" Triangle Tube $5.05 70 lbs. O-1098M Max order is 50 packs TIP Priority Mail Flat Rate Padded Envelopes are a great option to lower shipping costs. The Padded Envelope is flexible enough to include a small box inside to protect your items, but you are charged for only the low shipping cost of an envelope! Download this PDF guide at www.stamps.com/whitepapers All prices listed are Commercial Base rates (effective January 2014), only available for online postage vendors such as Stamps.com. PRIORITY MAIL ENVELOPES Outside Outside Outside Online Box image Description Box Box Box Postage Weight Packaging SKU Length Width Height Price Limit Tyvek Envelope for PM Service Ships in packs of 10 Non-Flat Rate Starts at Up to 10 pack 15 1/8" 11 5/8" $5.05 70 lbs. EP 14 Max order Water Resistant is 80 packs and Tear Resistant Tyvek Envelope for PM Service Ships in APO/FPO packs of 10 version Starts at Up to 10 pack 15 1/8" 11 5/8" Non-Flat Rate $5.05 70 lbs. MILI-PAC Max order is 80 packs Water Resistant and Tear Resistant Other Free Guides from Stamps.com Priority Mail Rate Guide Media Mail Rate Guide First Class Package International Service Click to download Click to download Rate Guide Click to download PRIORITY MAIL FLAT RATE BOXES Outside Outside Outside Online Box image Description Box Box Box Postage Weight Packaging SKU Length Width Height Price Limit Ships in 10 pack packs of O-SMALL-FRB 10 or 25 Small Always Up to 8 11/16" 1 3/4" 5 7/16" Flat Rate Box $5.25 70 lbs. 25 pack Max order O-SMALL- is 500 FRBX boxes 10 pack Medium Ships in O-FRB1 Always Up to Flat Rate Box, 11 1/4" 8 3/4" 6" packs of $11.30 70 lbs. Top Loading 10 or 25 25 pack O-FRB1X 10 pack Medium Ships in O-FRB2 Always Up to Flat Rate Box, 12" 3 1/2" 14" packs of $11.30 70 lbs. Side Loading 10 or 25 25 pack O-FRB2X 10 pack Large Ships in LARGE-FRB Always Up to Flat Rate Box, 12 1/4" 12 1/4" 6" packs of $15.80 70 lbs. Top Loading 10 or 25 25 pack LARGE-FRBX 10 pack APO/FPO Ships in MILI-FRB Large Flat Rate Always Up to 12 1/4" 12 1/4" 6" packs of Box, $13.80 70 lbs. 10 or 25 25 pack Top Loading MILI-FRBX Board Game Large Flat Rate Ships in Box, packs of 25 Always Up to 1 pack Side Loading 24 1/16" 3 1/8" 11 7/8" $15.80 70 lbs. GB-FRB (holds Max order approximately is 20 packs 2 board games) Order USPS Supplies in Bulk! Call 1-800-610-8734. PRIORITY MAIL FLAT RATE ENVELOPES Outside Outside Outside Online Box image Description Box Box Box Postage Weight Packaging SKU Length Width Height Price Limit Ships in Window packs of 10 Always Up to 10 pack Flat Rate 10" 5" $5.05 70 lbs. EP 14-H Envelope Max order is 50 packs Ships in Small packs of 10 Always Up to 10 pack Flat Rate 10" 6" $5.05 70 lbs. EP 14-B Envelope Max order is 40 packs 2 pack Gift Card Ships in EP14GTV Always Up to Flat Rate 10" 7" 2 or 5 pack $5.05 70 lbs. Envelope mailers 5 pack EP14GT2 Ships in packs of 10 Flat Rate Always Up to 10 pack 12 1/2" 9 1/2" Envelope $5.05 70 lbs. EP 14-F Max order is 60 packs 5 pack EP14PE-V Padded Ships in Always Up to 10 pack Flat Rate 12 1/2" 9 1/2" packs of 5, $5.70 70 lbs. EP14PE-X Envelope 10 or 15 15 pack EP14PE-XV Ships in Legal packs of 10 Always Up to 10 pack Flat Rate 15" 9 1/2" $5.25 70 lbs. EP14L Envelope Max order is 60 packs Download this PDF guide at www.stamps.com/whitepapers All prices listed are Commercial Base rates (effective January 2014), only available for online postage vendors such as Stamps.com. PRIORITY MAIL REGIONAL RATE BOXES Outside Outside Outside Online Box image Description Box Box Box Postage Weight Packaging SKU Length Width Height Price Limit 5 pack RRB-A1 Regional Rate Ships in Starts at Up to 10 pack Box A 10 1/8" 7 1/8" 5" packs of 5, $5.32 15 lbs. RRB-A1X Top Loading 10 or 25 25 pack RRB-A1V 5 pack RRB-A2 Regional Rate Ships in Starts at Up to 10 pack Box A 11 1/16" 2 1/2" 13 1/16" packs of 5, $5.32 15 lbs. RRB-A2X Side Loading 10 or 25 25 pack RRB-A2V 5 pack RRB-B1 Regional Rate Ships in Starts at Up to 10 pack Box B 12 1/4" 10 1/2" 5 1/2" packs of 5, $6.16 20 lbs. RRB-B1X Top Loading 10 or 25 25 pack RRB-B1V 5 pack RRB-B2 Regional Rate Ships in Starts at Up to 10 pack Box B 14 1/2" 3" 16 1/4" packs of 5, $6.16 20 lbs. RRB-B2X Side Loading 10 or 25 25 pack RRB-B2V Ships in packs of 1 Regional Rate Starts at Up to 1 pack 15" 12" 12" Box C $15.25 25 lbs. RRBC Max order is 1 pack TIP For products like shoes and clothing, Priority Mail Regional Rate Box A is the lowest cost option for packages traveling across the U.S. and weighing between 3 lbs. and 15 lbs. 042014.