http://ardnua.com/uploads/1/0/9/4/10943303/ard_nua_application_form_2012-2013.doc Redwood – We use Clear All Heart Kiln-dried Redwood to create beautiful and strong greenhouse kits. Redwood has a warm, natural beauty that fits well with residential architecture, complimenting your home and landscape. Redwood is naturally resistant to deterioration (specifically the top quality, All Clear Heart Redwood).
http://thebandchoice.com/corp-blue-stripy-background/ Heartwood, the truly red part from the redwood tree, is the only part of the tree which is rot resistant and no one but Sturdi-Built specifies heart grade redwood in their greenhouses.
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