Strand Lighting SPXGHB Steel Pattern Holder Tweet Description The Strand Lighting SPXGHB Steel Pattern Holder is designed for mounting "B" size steel patterns onto any SPX Zoomspot or Fixed Beam series Luminaire. Details Additional Category Tags: Lenses & Gobos, Accessories for Gobos & Patterns Category: Lighting & Studio Manufacturer Catalog Number: SPXGHB Product Manufacturer: Strand Lighting Subcategory: Light Modifiers