"We remain very confident in the future of the business and our competitive position within the market," he said.
"We have a strong balance sheet and our global growth strategy remains in place," he said in a statement.
The US business was down, primarily due to vehicle sales volumes falling by 34 per cent on the prior year. That market remained "primary area of focus" for 2020.
"This market is a key priority for us in the new financial year, and we are well under way with the implementation of our USA review conducted earlier in 2019," chief executive Grant Webster said.
While it had been a difficult year in the US, 2019 had been a record-breaking year for a number of businesses within THL.
The New Zealand rentals and sales business delivered earnings before interest and tax of $31.5m, representing 23 per cent growth on the prior year.
The Australia and Waitomo businesses also had record EBIT results.
THL said it remained committed to the Togo Group technology joint venture it has with Germany's Thor Industries.
"The Togo RV product is behind from a development perspective, but we are confident that the opportunity remains substantial," Webster said.
The company declared a final dividend of 14c per share, 50 per cent imputed, keeping the full-year dividend in line with the prior year's at 27 cents per share.