A - "Glazing code" - Refers to our recommendation for selecting glass (R) roof, (W) wall.
B - "Glazing description" - A description of the components used to obtain the glazing unit being described.
C- "Upcharge over clear" Insulated - Multiply the number in this column by the total square footage of option desired, and add to the base price of a standard unit with clear glass.
D- "Unit Availability" - Glass is available as a standard in the units specified in this column.
G-Geneva greenhouse and greenhouse kit, S- Sierra sun room, sun room kits and solarium, W- Woodhaven solarium & sun room
E - "Shading co-efficient" - Multiplier for the amount of solar gain entering through the glass. For example: a piece of glass with a shading co-efficient of .85 would let in 85% if the solar gain that would travel through a 1/8" piece of clear glass.
F - "Relative heat gain" - The measurable amount of energy which penetrates the glass is expressed in terms of BTU's of heat gain per hour per square foot of glass area.
G - "% Visible light transmittance" - The percentage of light in the visible spectrum, that is directly transmitted through the glass.
H - "% UV light transmittance" - Percentage of ultra-violet radiation transmitted through the glass.
I - "Inside the glass temp" - The temperature of the inside surface of the glass in degrees F when the following ashrae conditions exist. Outside temperature of 0 degrees F with a 15mph wind, and inside temperature of 70 degrees F.
J - "Inside dew point" - The outside temperature in degrees F that will cause condensation on the inside surface of the glass. This number assumes an inside relative humidity of 60% and a temperature of 70 degrees F.
K - "Winter U value" - The total heat transfer co-efficient which is the measure of heat loss through the glass due to a difference between indoor and outdoor air temperatures. The lower the U value, the better the insulating properties of the glass. (BTU/HR/SQFT/F).
L - "Winter R value" - The resistance to heat loss through the glass. The higher the R value, The better the insulating properties. (R=1/U).