The first three people to pop into their local Principality branch can pick up a free pair of tickets for the weekend's home match (a complete list of the matches and the nearest Principality branch to the home team is in the table below).
Managing Director of Principality, Tracy Morshead, said: "We are thrilled with our partnership with the WRU. We are both leading Welsh brands who share passion in our national sport."
Premiership champions Neath have a home clash against Glamorgan Wanderers and last season's runners-up Newport will be on home turf against Carmarthen Quins. Pontypridd are away to Maesteg and Swansea travel to Ebbw Vale.
In other round three matches on 17 September Pontypool are home to Llandovery, Cross Keys host Llanelli, Bridgend travel to Cardiff, and Aberavon have home advantage to Bedwas.
17/09/2005 - Local Principality Branch
Ebbw Vale v Swansea 2A The Walk, Ebbw Vale
Pontypool v Llandovery 3 Commercial Street, Pontypool
Cross Keys v Llanelli 3 Commercial Street, Pontypool (nearest branch)
Newport v Carmarthen Quins 33 High Street, Newport
Neath v Glamorgan Wanderers 1a Wind Street, Neath
Aberavon v Bedwas 7 Riverside Walk, Port Talbot
Maesteg v Pontypridd 139 Commercial Street, Maesteg
Cardiff v Bridgend Any Cardiff branch
To find the nearest branch to your local rugby club go to www.principality.co.uk or phone 0800 678 1000