Thank you for your question on the RMDD3604EX down draft unit. This model must use an in-line or exterior blower option. They are purchased separately and do not come with the purchase of the unit. The following blowers are compatible with this unit: 331H, 332H, 335, 336, HLB3, HLB6, HLB9, and HLB11. These can be seen on the Broan website. Should you have further questions, please contact us directly at 800-637-1453.
Date published: 2017-01-11