For air circulation, the Reznor UDZ uses an axial propellor fan.
Model UDZ gas-fired, separated combustion unit heaters are great for space heating applications. These models use outside air for combustion to prevent dirt, lint, dust, or other contaminants in the indoor atmosphere from being burned. Model UDZ is available in 14 sizes ranging from 30,000 to 400,000 BTUH gas input and are approved for installation in the United States and Canada by ETL. Model UDZ unit heaters feature a two-tone black and white powder-coated, scratch-resistant paint scheme with a single red louver. Each unit has clean rounded corners and edges with no visible screws or fasteners. The bottom of the unit is embossed with the Reznor logo.
Reznor UDz Key Features and Benifits:
Sizes 30-400 MBTUH certified for commercial/industrial heating application
Sizes 30-125 MBTUH carry an additional approval for use in residential garage/workshop heating applications
50-60°F Rise range
Integrated circuit board with 7 segment display
External status indicating LED
Hinged door with ¼ turn latch
Improved cabinet design with removeable front face and two tone white and black powder paint.
I have shopped with Hydrobuilder for years due to their excellent customer service and fantastic selection. They have clear communication and are always so nice and knowledgeable. They are always amazing to work with, and I'll be a customer for life. Highly recommended!