Watch out using old window sash. It's great to repurpose and reuse old building materials BUT old painted window sash or old storm door inserts may have accumulated many layers of lead paint that will then chalk off and flake off in your garden beds. Much better to use cast off aluminum triple track storm window inserts...and with only the narrow aluminum edge glazing they let in more light. And they are much lighter to handle. Never painted=no lead.
Watch out using old window sash. It's great to repurpose and reuse old building materials BUT old painted window sash or old storm door inserts may have accumulated many layers of lead paint that will then chalk off and flake off in your garden beds. Much better to use cast off aluminum triple track storm window inserts...and with only the narrow aluminum edge glazing they let in more light. And they are much lighter to handle. Never painted=no lead.