Pontiac 1999 Montana Owner's Manual page 170

The side of the convenience net closest to the front of
the vehicle is higher than the side closest to the liftgate.
Once you've loaded items into the net, stretch the higher
side of the net up and over the top of the load to hold it
firmly in place.
2-74
The convenience net has a maximum capacity of 100 lbs.
(45 kg). It is not designed to hold larger, heavier loads.
Store such loads on the floor of your vehicle, as far
forward as you can.
When not in use, it is recommend that you take down
the convenience net to extend its life and retain its
elasticity, and to keep the rear exit clear. Store the net in
the pouch behind either front seat, in the optional
saddlebag or in one of the side convenience nets.
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