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Alphamid TM

    How does it do in wind, and what about that flat side?
    Pyramid shapes do very well in wind if the tie out anchors are strong. I have used a pyramid
    in eastern Oregon winds strong enough to knock people over and that broke the aluminum poles
    of a North Face expedition dome tent. With the alphamid having a vertical side, you would want
    to face that to the lee of the wind in those conditions and it should work as well as the other pyramids.
    
    How tall is the zipper? Does it have a vent?
    The zipper on stock versions runs to within 6 inches of the top of the shelter. It has a zip pull that
    can be pulled down from the top and tied open to form a vent. This combined with raising the
    back center hem tieout give flow through venting.
    
    What are the advantages to the vertical side?
    1. weight savings (about 7 ounces in the silnylon version)
    2. packing space savings
    3. ability to set up shelter close to trees and cliff faces to take advantage of
    space limitations and overhead anchors (limbs etc.) you don‘t need to bring a pole.
    4. smaller footprint for dense forest
    5. door can be open in some circumstances during rain or snow without rain entering the
    shelter.
    
    Why is it so tall?
    1. Some have been made shorter as custom orders, but the 6‘ height sheds snow much better,
    even than a 5.5‘ height used by some competitors pyramids. This was proven in use by the
    Catherine Freer School in very heavy snow conditions in the Oregon Cascades. You don‘t
    have to get out and shovel the shelter so often.
    2. It also provides more headroom and thus less chance you‘ll brush up against a frosty or
    condensation laden tentwall.
    3.Condensation that forms (more common in single wall shelters) tends to run down the fabric
    wall an into the ground rather than drip off onto your bag and gear.
 
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