Pella® Impervia® Fixed Window
Detailed Product Description

Frame 
•	Frame is Duracast® fiberglass composite — five-layer pultruded fiberglass material [with optional foam insulation1] reinforced with a Pella patented interlocking mat.
•	Overall frame depth is 3".
•	 Nominal wall thickness of Duracast fiberglass composite members is .050" to .070" thick.
•	Frame corners are mitered, joined and bonded with corner lock and mechanically fastened with injected polyurethane adhesive.
•	 Sill is fitted with weep valve assemblies.
•	Jambs contain factory drilled (counter-bored) installation screw holes. Block Frame and Flush Flange only.
•	Optional factory-applied jamb extensions available in 4-9/16" and 6-9/16".
Sash 
•	Sash is Duracast fiberglass composite — five-layer pultruded fiberglass material [with optional foam insulation1] reinforced with a Pella patented interlocking mat.
•	All sash members have mitered corners bonded with corner lock and sealed with injected polyurethane adhesive.
Exterior/Interior 
•	Duracast fiberglass composite surfaces with powder-coat paint finish.
•	Color is [White] [Brown] [Black] [Tan] [Morning Sky Gray].
– or –
•	Dual-color option [Brown] [Black] [Tan] [Morning Sky Gray] exterior with White interior2.
Glazing System
•	Quality float glass complying with ASTM C 1036.
•	11/16" insulating glass [[annealed] [tempered]] [obscure3] [[clear] [Advanced] [SunDefense™] [SunDefense+] [AdvancedComfort] [NaturalSun] [NaturalSun+] Low-E coated, with argon]] sealed and bonded to sash.
•	High altitude glazing [with argon] available.
•	Open glazing available for PTAC applications – frame only no sash.
Optional Products
Grilles
•	Grilles-Between-the-Glass
•	Insulating glass contains 3/4" contoured aluminum grille bars permanently installed between two panes of glass.  
•	Grilles are factory prefinished [White] [Brown] [Black] [Tan] [Morning Sky Gray] to match interior and exterior finish.

(1)	Foam insulation inserts are not available with clear glazing.
(2)	Dual-color finish is not available on products with integral nailing fin.
(3)	Obscure glazing is not available when AdvancedComfort Low-E coated IG is specified.