Andy thanks for the info regarding the drain tube.
Currently trying to help a friend select the best A/C to fit with little modifcations.
The issue is that the square crank up vent is 12-13" behind the opening for the A/C.
The old duo therm that was removed was shorter than all current models on the market
Looks like the A/C is going to have to moved forward a couple of inches.
The Dometic Briskair and advent air has a model that requires 14 7/8"
All other models need between 18" and 22"
If anyone knows of any other options please chime in.
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