Grabill offers architects, proven engineered performance and complete design flexibility. This 25 ft. transom is fabricated with anodized aluminum clad exterior and white oak interior. It contains four direct set pieces of glass joined by common mullions to give a clean, contemporary appearance. Engineered to meet design loads, the wood frame members are laminated from rift white oak veneers and douglas fir cores. With a unit this size, field glazing is required and will be completed from the outside with European style extruded aluminum glazing frame.