Exaco Janssens | Rafter / Stud Reinforcement Inserts
The Janssens PRO21777 Reinforcement Inserts are durable unpainted aluminum supports designed to strengthen Victorian, Modern, and Arcadia greenhouses. Custom cut to fit your greenhouse, these inserts slide directly into standard rafter and sidewall profiles to provide added rigidity and improved resistance against heavy snow and strong winds without reducing usable interior space.