We are getting ready for our first trip with the new unit. What is the best way to get an accurate measurement of the overall height of trailer when hitched to the truck? The spec sheet list 13'4". Does the unit get taller when hitched?

I guess you need to measure from the top of the front AC to the roof then hook up your TV and measure to the ground from the parallel position on the roof to the AC. Good luck and don't fall off the roof. Let us know what you find. I put 13'4" in my GPS.

Have any of you had any experience with the low profile units?

I measure down off the header in the garage, which is 14', or I've done the same think under a gas station canopy. Measure down from deck to the highest point of the roof, then measure from deck all the way down to the ground.

I used a 2x4 piece of wood about 8'long , I placed it on the highest part of the camper AFTER I WAS HITCHED UP.. I measured from the ground to the bottom of the board....
For me , I had my daughter up there with me holding the board from teetering off the AC unit.

We are getting ready for our first trip with the new unit. What is the best way to get an accurate measurement of the overall height of trailer when hitched to the truck? The spec sheet list 13'4". Does the unit get taller when hitched?

1. Set all of trailer tires and truck tires to the towing pressure.
2. Hitch up to your truck. Include any passengers that you travel with.
3. If you have the Trail-Air Tri-Glide pin box, set the bag pressure to your towing condition.
4. Find the highest point on your coach such as front A/C or maybe your satellite dome.
5. Find a 2x4 (about 8 feet long) that is straight.
6. Place the one end of the 2x4 on the high point and support the other end so you can level the 2x4 with the end hanging out over the side of the coach.
7. Measure from the bottom edge of the 2x4 to the ground. You now have the height of the coach.

This all assumes you have your coach loaded to your traveling weight.

Hope this helps.

Yes...that is what we did yesterday afternoon. The wind was a bit strong so I am up on the roof holding the board and one end of the tape, the Mrs. is down on the ground reading the tape. She says she measured 13'10" but that just don't seem right to me.

Needless to say I have been shopping for low profile air conditioning units. Mach 8 is what I think I would replace the existing units with.

So what kind of heights have some of you recorded when you measured?

Something is wrong . . . There is no way you are 13'10" . . MAYBE 13'5" MAX.... I did mine last year and it was 13'4-1/2" . . I since lowered the front by 2-1/2" on the hitch . . So I will re measure mine the next time I hook up...

We are about 13'04". I also question 13' 10" as that is way over most standard highway trailers.

The law states no semi trailer of 13'6".

No way is it that tall or the delivery driver would have had the roof cleared off long before you got it. You need to be on a level surface also when measuring. I will definitely try again & save the price of new acs, you shouldn't have to worry about most hiways unless more than 13'6".

The law states no semi trailer of 13'6".

That is generally because bridges are 14' and higher. Don't forget that as you travel, you may hit bumps and rest assured, that will cause you to be more than 13' 4" anyway.

Just for information....Ours 38GK is 13' 2". I know this because I entered a State Park with a canopy at 13' 3". We were 1" under it and moved VERY slowly to get through.

I have a State Bridge Map. What State are you crossing? I'll look at my map for Bridge heights.

Go to a truck stop & pick up a "Motor Carriers" atlas & it has all low clearances listed in the front by state.

Yes...that is what we did yesterday afternoon. The wind was a bit strong so I am up on the roof holding the board and one end of the tape, the Mrs. is down on the ground reading the tape. She says she measured 13'10" but that just don't seem right to me.

Needless to say I have been shopping for low profile air conditioning units. Mach 8 is what I think I would replace the existing units with.

So what kind of heights have some of you recorded when you measured?

You definitely need to re-measure. Find something that you can use to prop up the end of your 2x4, then put at least a good 24 inch level on the 2x4 and shim it up until is perfectly level. Then use a tall step ladder to get up there to measure and read the tape measure.

This all assumes that you have the trailer and truck on relatively level ground before making the measurements.

I used this technique and my coach checks out at 13 feet 4 1/4 inch. That was after I installed the MorRyde SRE-4000 and heavy duty shackles kit last summer.