• THERMAG semi-vacuum glass blocks, with "Magnalite"
lenses give complete 4-way light diffusion through an entire
room. Total solar heat transmission per square foot of skylight
area is under 50% by test. Airtight construction virtually
eliminates heat loss.
• THERMAG's rigid, insulated reinforced concrete
grid construction is designed to withstand all snow loads and
foot traffic. THERMAG's smooth surfaces clean easier. Its
design and insulation guard against any chance of condensation.
• THERMAG's even diffusion of mellow white daylight over
side room areas keeps skylight aeras at a minimum. The soffit
is highly ornamental. For details, see Sweets. For prompt
engineering service without obligation, write direct to 2139
West Fulton Street, Chicago.
Light Up—the AMERICAN Way!