Solatube International, Inc. CAD Details Search using keywords: shear box diffusers
M74DS O Curb Cap Open Ceiling Dual-Glazed Diffuser
M74DS O Curb Cap Open Ceiling with Single-Glazed Diffuser
M74DS O Curb Cap Open Ceiling Dual-Glazed Diffuser
M74DS O Curb Cap Open Ceiling with Single-Glazed Diffuser