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Home > Greenhouses, Tunnels & Components > Greenhouse Components
Building a caterpillar greenhouse tunnel?
We have great parts!
- inside connection sleeves for 1-3/8" fence rail (other sizes available, check the information side of the site, Tube Fittings)
- tubegrips (AKA snapclamps, etc) to attach the poly (32 mm for fence rail)
- heat-saver greenhouse poly, durable and great to grow under!
- repair tape
The BEST is the wire straps (1-3/8" X 1-3/8") to attach a horizontal run of fence tube to your bows. Wire straps make a FAST, firm connection without drilling (and weakening) the arch.
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3-hole connection plate
3-Hole Connection Plate
Price: $2.75 plus tax(es)

1 1/2" X 4 1/2" X 3/16".

Round holes are 5/16" diameter, the center hole is 9/32" X 9/32".

Versatile plate used for splicing baseboard lumber, gable framing, and custom applications.

door handle, sliding door hardware
Door Handle
Price: $4.50 plus tax(es)

Easy-use door handle for sliding doors systems.

Includes 2 self-drilling screws for installation (screws are Canadian made with exceptional durability).
caterpillar greenhouse tunnel part
T-Straps, 1-3/8"
Price: $11.50 plus tax(es)

Make a firm right angle connection between 2 pieces of 1-3/8" (fence rail tube)
Use to connect purlins to end bows.
10 per order.

Supplied with 3 self-drilling screws per strap (screws are Canadian made with exceptional durability).
Monorail track hanger.
Monorail track hanger
Price: $12.50 plus tax(es)

Monorail track hanger.
Requires 1" OD drop tube.
caterpillar tunnel
Inside Connection Pin, 1"
Price: $12.50 plus tax(es)

Inside connection pin, for 1" OD (16 or 18 ga.) tube. The center is raised to keep sharp tube edges away from the poly.
4-7/8" long
10 per order.
caterpillar tunnel
Inside Connection Pin, 1"EMT
Price: $13.25 plus tax(es)

Inside connection pin, for 1" EMT.
4" long
10 per order.
caterpillar greenhouse tunnel part
Omega-Straps, 1-3/8"
Price: $13.25 plus tax(es)

Attach wood and other flat surface materials to 1 3/8 tubes.

10 per order.

Supplied with 1 self-drilling screw per strap (screw are Canadian made with exceptional durability). Hardware for feet supplied by customer.
caterpillar tunnel
Inside Connection Pin, 1-3/8"
Price: $13.50 plus tax(es)

Inside connection pin, for 1-3/8" fence rail, the center is raised to keep sharp tube edges away from the poly.
5-1/5" long.
10 per order.
Drill less Brace Pin, 3/4", 19mm, tap in brace pin.
Brace Pin, 3/4"
Price: $13.60 plus tax(es)

Create a hole at the end of 3/4" conduit tube without drilling.
Simply tap them in with a hammer - will not come out, ever!
Avoid the difficult job of drilling holes into round tube.
20 per order.
greenhouse pipe connector, plastic greenhouse connector, wire strap
Wire Strap 1" X 1"
Price: $14.00 plus tax(es)

Wire straps (spring steel) tightly connect tubes at right angles and other angles. 20 per order.
These straps can be used to connect 3/4" X 3/4" PVC and PE pipe.