June 18 (Reuters) - Norbord Inc OSB.TO :
* NORBORD ANNOUNCES PROPOSED SENIOR SECURED NOTES OFFERING
* NORBORD INC - TO LAUNCH AN OFFERING OF APPROXIMATELY US$350 MILLION IN AGGREGATE PRINCIPAL AMOUNT OF SENIOR SECURED NOTES
* NORBORD INC - NOTES WILL RANK PARI PASSU WITH COMPANY'S EXISTING 5.375% SENIOR SECURED NOTES DUE 2020
* NORBORD INC - NOTES WILL ALSO RANK PARI PASSU WITH COMPANY'S EXISTING 6.250% SENIOR SECURED NOTES DUE 2023 AND COMMITTED REVOLVING BANK LINES
* NORBORD INC - NORBORD INTENDS TO USE NET PROCEEDS FROM OFFERING TO REDEEM FOR CASH ALL OF OUTSTANDING 2020 NOTES