hopper frame noun a window frame having one or more upper sashes hinged at the bottoms and opening inward. Liberaldictionary.com
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
hopper frame noun a window frame having one or more upper sashes hinged at the bottoms and opening inward. Liberaldictionary.com
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019