3-way "Boss" Spider fitting to suit 3 panel glass assembly as used for flush glazing is manufactured by Ashler Architectural Glass Fittings. The 3-way "Boss" Spider fitting is designed to suit 3 panel glass assembly. It features the model number AL 11-3. These Spider machines are structured to suit 3 panel glass assembly. The 3-way "Boss" Spider fitting to suit 3 panel glass assembly is available in Satin Stainless Steel Finishes and Polished Stainless Steel.