A:Answer Mrandmrsc, thank you for your inquiry! In researching your air conditioner, FFRE10B3Q1, the dimensions are 14.5 inches tall and 19 inches wide. No additional accessories are required to complete the installation. We do hope this information is of assistance. If you have any additional questions or concerns, do not hesitate to contact us directly or by resubmitting a question on this Q&A website. -Kind Regards-