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S-10
S10 Our least expensive model curb is ideal for those applications where moisture from condensation and operating noise from the equipment are not a concern.
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S-20
Self-Flashing curb with 1" semi rigid insulation installed.
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S-30
Our S-30 model curb includes insulation and a damper tray or shelf for installation of a damper. If the dimensions for the damper shelf are not specified, the opening will be 3" less than the A & B curb dimensions.
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