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1. L frame curb mount skylight: aluminum frame, acrylic
   dome(s) skylight that requires a curb above the roof to mount
   on. Outside wood curb dimension required to order skylight.
   
   
2. Self-flashing skylight: aluminum frame, acrylic dome(s)
   skylight that installs over flush opening in the roof. Inside
   opening dimension required to order skylight.
   
   
3. Replacement domes: A damaged dome may be removed from
   most aluminum frame skylights & replaced with a new dome.
   Dimensions required are: length, width, height & flap lid
   width of dome.
   
   
4. Bottom frame: Aluminum frame that support the domes, has
   condensation gutter & weep holes to drain any moisture to the
   outside of skylight.
   
   
5. Retaining frame: Aluminum angle that goes over dome lip &
   fastens to bottom frame to secure dome to bottom frame.
   
   
6. Curb: A wood box built above the roof & flashed to set a
   curb mount type skylight on.
   
   
7. Flashing: Sheet metal that extends from top of wood curb
   down the side bent at 90 degrees to extend at least 6" under
   roofing material. May be step flashed with each layer of
   shinges up sides.
   
   
8. Tunnel: Opening that extends from roof to ceiling to allow
   light into house from skylight.