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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

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.

more info
door handle, sliding door hardware
Door Handle
Price: $4.50

Easy-use door handle for sliding doors systems.

Includes 2 self-drilling screws for installation (screws are Canadian made with exceptional durability).
more info
Upright Framing Brackets
Off-Set Brackets
Price: $7.75

1/8" thick steel, 4" overall length, 1/2" off-set

Versatile, heavy-duty brackets, well suited to framing greenhouse end walls.


One per order.



more info
caterpillar tunnel
Inside Connection Pin, 1"
Price: $12.50

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.
more info
caterpillar tunnel
Inside Connection Pin, 1"EMT
Price: $13.25

Inside connection pin, for 1" EMT.
4" long
10 per order.
more info
caterpillar tunnel
Inside Connection Pin, 1-3/8"
Price: $13.50

Inside connection pin, for 1-3/8" fence rail, the center is raised to keep sharp tube edges away from the poly.
1.091" outside diameter X 5-1/5" long.
10 per order.
more info
greenhouse pipe connector, plastic greenhouse connector, wire strap
Wire Strap 1" X 1"
Price: $14.00

Spring steel wire straps tightly connect tubes together, quickly, easily and without drilling or compromising tube strength. Connectors for 1" to 1" fence tube or ¾" PVC.

20 per order.

more info
caterpillar greenhouse tunnel part
Omega-Straps, 1-3/8"
Price: $14.45

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.
more info
greenhouse pipe connector, plastic greenhouse connector, wire strap
Wire Strap 1 1/4" X 1"
Price: $14.50

Spring steel wire straps tightly connect tubes together, quickly, easily and without drilling or compromising tube strength. Connectors for 1" fence tube to ¾" EMT, 1⅜" x ¾" EMT or 1" to ¾" PVC.

20 per order.

more info
greenhouse pipe connectors, plastic greenhouse connectors, wire strap
Wire Strap 1" X 1 1/4"
Price: $14.50

Spring steel wire straps tightly connect tubes together, quickly, easily and without drilling or compromising tube strength. Connectors for ¾" to 1" EMT, ¾" EMT to 1⅜" fence tube or ¾" to 1" PVC.

20 per order.

more info