The 4” hubs are designed for 1” PVC pipe with 1.315” OD. If you want to use 3/4” or 1”
EMT conduit, upon request we will drill the hubs with the correct apertures for these
ODs as a special order.
How to Cut and Drill the Struts:
Mark the pipe with a marker, using a tape measure or a jig for the length.
Cut the pipe to length using a pipe cutter or chop saw.
Drill a 5/16” or 3/8” hole across each of the ends of the pipe, about 3/8” to 1/2” from the
pipe ends. Use a drill press if possible. Drill slowly so you won't crack the pipe.
The holes on each end of the pipe have to be drilled parallel to each other. If they are 90
degrees off, you won't be able to attach the end of the strut to the center ring. Try to drill
through the lettering on the outside of the pipe, that will help you line up the holes on
each end of the strut so they are parallel to each other.
Mark the pipe with Blue, Black, Red, or Yellow colored tape to help you distinguish
them during setup.
How to Attach a Greenhouse Covering:
Greenhouse Plastic can be purchased from your Farmer's Co-Op, a Greenhouse supply
store, or from Farmtek at
www.farmtek.com
Recommended Greenhouse Covering Sizes for the 1 Extension Tunnel Dome
Dome Size:
Covering Size:
1. 17’ wide, 25’ long.
42’ long, 32’ wide
2. 14’ wide, 20’ long.
34’ long, 25’ wide
3. 11’ wide, 17’ long.
28’ long 22’ wide
4. 20’ wide, 30’ long.
48’ long, 36’ wide.
Preparing the Dome for the Covering:
Before attaching a greenhouse covering, the
zip ties must be trimmed so that they do not
extend past the edges of the hub and into the
covering.
Use a pair of wire cutters or snips to cut the
ends off the zip ties inside the hubs.
