Home > Products > Tier Discounts > Treated Lumber Purchase 50+ boards, any combination, of our Treated Lumber and receive a discount off the whole treated lumber order! Any size, any length applies. Tier discounts: Board Quantity Discount % off Retail 50 Boards 13.20% 100 Boards 17.70% 250 Boards 21.50% 500 Boards 25.00%