Myers Industries Inc., a supplier of plastic parts to the RV industry, announced it will report lower than expected earnings for the fourth quarter and the full year 2000.

The American Stock Exchange-listed company expects to earn 21 cents a share during the fourth quarter, compared with the market analysts’ consensus forecast of 42 cents a share.

For the full year 2000, Myers expects to earn $1.11 a share, compared with $1.41 a share earned in 1999.

Myers, primarily a supplier of rubber and plastic components to the auto and truck industries, blamed the sharp decline in production of heavy trucks and slowing auto production for its decline in earnings.