This article is from the Table Tennis (Ping Pong) FAQ, by ttennis@bu.edu with numerous contributions by others.
Don't try to get by with a cheap net. Many of them are not high enough
(must be 6"), do not extend beyond the table sides (6" out from each side),
and have a space between the bracket and the end of the net. The better
nets have a tension adjustment cord running lengthwise across the top.
Make sure the brackets fit your tables.
A good net may seem expensive but is a worthwhile investment. Take a look
at several before making a purchase.
 
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