TW-4C 3" tunnel with WDC Modified Excluder entrance adapter glued on, double width exterior porch and interior cling rod $5.50
The TW-4C is a 3" diameter tunnel that is 2 1/2" long. It has a WDC Modified Excluder entrance adapter glued to it. The adapter plate is glued so that it cannot be changed. This is the tunnel adapter to use if you do not suffer from SREH anxiety. The adapter plate has a double width exterior porch with an inside cling rod. The bottom of the tunnel acts like an interior porch. There is a drainage hole drilled in the bottom near the front and a small dam glued to the back of the tunnel. Both help to keep water from entering the nesting area. The tunnel is good for any natural, Supergourd, or Natureline. On the Natureline, it must be mounted to the back of the gourd. The tunnel is good for adding extra depth to a gourd, especially if your gourds are on the small side. The tunnel is mounted by tracing a line around the tunnel when it is placed against the gourd. Then, take a sabre saw, and cut the line. You want as tight a fit as you can get. Insert the tunnel as far as you want. You can barely put in it, you can put in part way in, or you can put it all the way in. Also, I am willing to make the tunnel longer if you feel it is needed. The TW-4C tunnel sells for $5.50 plus S&H.
TW-4C
Here is a TW-4C mounted onto a natural gourd. Photo by Shelly Harris
Here is a TW-4C mounted onto a Supergourd by Angela Chance.
"I used my dremel tool with a cutting bit to drill out a hole just barely big enough to insert the tunneled entrance. I caulked around the entrance, and the martins love them!!!" Angela Chance-TX
Photo and quote by Angela Chance
Here is a TW-4C mounted onto a Troyer Horizontal by Angela Chance.
"This is one of the Troyers that I added Sandy's WDC porched entrance. I took a dremel tool, with a cutting bit, and removed the entire front of the gourd. I then placed Sandy's entrance & caulked around the edges. The martins seem to really like those I switched over. This gourd has 6 babies." Angela Chance-TX
Here is a pair of martins shown using the double porch of a TW-4C. Thanks to Carol Stotler of North Dakota for allowing me to use her picture.
