David Hoffman Photo Library | Draught proofing tests with smoke generator to show air leaks around sash window frame.

https://di262mgurvkjm.cloudfront.net/2d55999d-4269-4705-ba16-04dd17ce0325/47380001_xgaplus.jpghttps://www.hoffmanphotos.com/contacthttps://www.hoffmanphotos.com/m/-/galleries/stock-archive/work/-/medias/2d55999d-4269-4705-ba16-04dd17ce0325/price

Draught proofing tests with smoke generator to show air leaks around sash window frame.

https://di262mgurvkjm.cloudfront.net/8476ea65-5024-43d4-827c-72d1e67a1ea5/47380009_xgaplus.jpghttps://www.hoffmanphotos.com/contacthttps://www.hoffmanphotos.com/m/-/galleries/stock-archive/work/-/medias/8476ea65-5024-43d4-827c-72d1e67a1ea5/price

https://di262mgurvkjm.cloudfront.net/7406b046-4368-4308-a5b1-d9b9a346d9b6/47380013_xgaplus.jpghttps://www.hoffmanphotos.com/contacthttps://www.hoffmanphotos.com/m/-/galleries/stock-archive/work/-/medias/7406b046-4368-4308-a5b1-d9b9a346d9b6/price