- Title
- Series 230 Return Air Grilles; Series 240 Return Air Registers with Multi-Shutter Damper; Series 241 Return Air Registers with Opposed Blade Dampers
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- Date of Original
- 18 October 1971-14 March 1972
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- Format of Original
- ["Project Records"]
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- Project Type
- ["Educational"]
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- Project Name
- ["Bryn Mawr Lower School and Elementary School (Baltimore, MD, USA, 1971-1972)"]
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- Project Location
- ["United States--Maryland--Baltimore"]
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