Tube end supports

Tube end supports, used to support the end of the vacuum glass tubes, also fix the tubes with the frame tightly.

Now we are using a kind of adjustable tube end support, made of high quality nylon material, easy to install.

Because it is adjustable, with screw inner cover, easy to make the tube tightly between the inner tank and frame end pole.

Also whenever tubes are broken, just loose the inner cover, take away the bad tube, replaced with the good tube.