protected cold frames
Boyce Tankersley (Wed, 21 Jan 2009 12:00:16 PST)

Hummerts International located in St. Louis, MO also has a nice online
catalog with a number of greenhouse/coldframe components for sale.

http://www.hummert.com/aboutus.asp

Boyce Tankersley
Director of Living Plant Documentation
Chicago Botanic Garden
1000 Lake Cook Road
Glencoe, IL 60022
tel: 847-835-6841
fax: 847-835-1635
email: btankers@chicagobotanic.org
-----Original Message-----

Different kinds of automatic vent controls can be obtained from
Charley's Greenhouses in Washington; they have a website and print
catalog.

Jane McGary
Northwestern Oregon, USA

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