Sloped IC (insulation contact) rated recessed can assembly. Certainly not airtight, but when used in conjuction with ADA gasketing, and air tight trim, they are as good as you can do, without building a firecode drywall box around the rough in housing.
"Where can I view the 'how to' for gasketing for this type of recessed can?" --MJ, 04/04/13
Canon EOS Digital Rebel Full EXIF / IPTC
Photo 101 of 224, IMG_5836.JPG, 60KB, 640x427, 418 Hits
Other Sizes: Medium Original