USPS Shipping Module by MarcoB - RateV4, IntlRateV2 - Support Thread

[nsapp]

See if this helps....

\includes\modules\shipping\usps.php

Around Line 187, Edit the coded volume of 12.5 to whatever you want to be the max volume that you will ship via first class.

'First-Class Mail Package'=>
        array('id'=>0, 'maxWeight'=>0.8125, 'transitReq'=>'StandardB', 'maxGL'=>108, 'maxLength'=>'', 'maxWidth'=>'', 'maxHeight'=>'', 'volume'=>12.5, 'regOnly'=>0, 'commOnly'=>0, 'size'=>'', 'fcType'=>'PARCEL','container'=>'', 'service'=>'FIRST CLASS'), //CLASSID="0"

Thanks, Rix. You really know how to make it look easy. I was wondering where that threshold was, now I know. Thanks again.