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Old 06-07-2018, 01:58 PM   #1
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Hatch Hole Measurements

When the hatch is removed what are the actual dimensions of the hole?
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Old 06-07-2018, 02:03 PM   #2
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if I remember correctly it was 24"X24"
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Old 06-07-2018, 03:20 PM   #3
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With the holes from the screws you gotta factor in a few more inches, if replacing it is what you're planning. I think my hatches have all been Transpec.
I used 30" squares of 18ga.
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Old 06-07-2018, 03:41 PM   #4
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With the holes from the screws you gotta factor in a few more inches, if replacing it is what you're planning. I think my hatches have all been Transpec.
I used 30" squares of 18ga.
This works better for me as I plan on putting a piece of Lexan over the opening and then adding a 14" x 14" vent fan in the middle of the skylight. The more opening around the vent the better. 24" would only give me around 5" clear ring, a 30" hole would give me an 8" ring, more light

How far in from the edge are the screw holes? If I over lapped 1" .........Nevermind, it doesn't matter. As long as the screw holes are covered by the Lexan I'm good. Use new holes for rivets.
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Old 06-07-2018, 04:12 PM   #5
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When the hatch is removed what are the actual dimensions of the hole?

I did mine recently, I think with my emergency hatch removed, my hole was rounded in the corners, but closer to 25x25 than 24x24. The hatch itself extended out 27x27 on the top.



I am glad I had 2 emergency hatches, because just having a side window open and one roof hatch popped does a lot of good on a warm day before I have to kick in the roof AC that I placed in the other one.
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Old 06-07-2018, 04:14 PM   #6
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I did mine recently, I think with my emergency hatch removed, my hole was rounded in the corners, but closer to 25x25 than 24x24. The hatch itself extended out 27x27 on the top.



I am glad I had 2 emergency hatches, because just having a side window open and one roof hatch popped does a lot of good on a warm day before I have to kick in the roof AC that I placed in the other one.
Pics?.....
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Old 06-07-2018, 04:16 PM   #7
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I did mine recently, I think with my emergency hatch removed, my hole was rounded in the corners, but closer to 25x25 than 24x24. The hatch itself extended out 27x27 on the top.



I am glad I had 2 emergency hatches, because just having a side window open and one roof hatch popped does a lot of good on a warm day before I have to kick in the roof AC that I placed in the other one.
Two fantastic vents would move a LOT of air even on a stale day.
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Old 06-07-2018, 04:20 PM   #8
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Two fantastic vents would move a LOT of air even on a stale day.
I think vents with fans make a huge different moving down the road just to circulate the air. I want one in both ends, but don't like the thought of no more roof exit.
Crack a front window and turn on the rear fan and it will move a lot of air.
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Old 06-07-2018, 04:28 PM   #9
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I think vents with fans make a huge different moving down the road just to circulate the air. I want one in both ends, but don't like the thought of no more roof exit.
Crack a front window and turn on the rear fan and it will move a lot of air.
You can get better roof hatch exits than the Transpec stuff that comes on the bus.

RV Escape Hatches, Trailer Hatch, Elixir Hatches
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Old 06-07-2018, 04:47 PM   #10
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You can get better roof hatch exits than the Transpec stuff that comes on the bus.

RV Escape Hatches, Trailer Hatch, Elixir Hatches
I have short pockets.
But those are reasonably priced. Don't like the style much.Oops, it's the angle of the pic makes it look rectangular. $114 for a 26"x26" is reasonable. No fan, and how do get past the crank support bar on egress?
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