Expert Answers about Ram ProMaster 3500

• Comparing Square Gooseneck to 5th Wheel Adapters To Round Adapters
• The Ram Gooseneck to 5th Wheel Trailer Coupler Adapter Inner Tube - Square - 30,000 lbs # KPG5-Q30IP is a 4 inch square tube with a 7/8 inch pin hole diameter. The holes are 2-11/16 inches on center and have a total adjustment height of 8 inches. The king pin is the standard size of 2 inches diameter and also the standard length of just over 3.305 inches. This will fit the inside the outer square tube of most gooseneck trailers. The round adapters are available as well like # KPG5-R25-IP....
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• Comparing the Fan-Tastic Vent Ultra Breeze Trailer Roof Vent Covers part FVU1400GRS and FVU1500GR
• The Fan-Tastic Vent Ultra Breeze Trailer Roof Vent Cover part # FVU1400GRS is designed to be used with Fan-Tastic Vent model numbers starting with "DF" whereas the Fan-Tastic Vent Ultra Breeze Trailer Roof Vent Cover part # FVU1500GR is designed to be used with Fan-Tastic Vent model numbers starting with "FA" or "FV". That is the only difference. The model number will be on the base under the screen.
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