Home > Specifications & Details > Fixed Windows

		Suited to every major commercial application, Pella’s fixed windows: Are appropriate for storefronts, ribbon applications, and window walls Come available in sizes up to 50 square feet Are built to order in 1/4" increments Feature exterior glazing stops for spandrel locations Perform up to DP 90* Can accommodate virtually any shape and sheet material up to 2" thick that can be cut to size * Performance class and grade rating and related hallmark certification apply to single units only with appropriate glass options and not the combined or composite units.

	Nonoperable companion units (frame dimensions*)
	Rectilinear (maximum of 50 square ft)	8" (203)	10' 0" ** (3048)	8" (203)	10' 0" ** (3048)
	Curve Top Maximum area of 38 sq. ft for all curve tops except for half circles and full arch heads, where the maximum area is 50 sq. ft. (when measured as a rectangle).	1' 0" (305)	9' 0" (2743)	10 1/2" (267)	8' 0" (2438)
	*Opening = frame + 3/4" Sizes listed in parenthesis denote millimeters. Larger & smaller sizes available on custom basis. See your local Pella sales representative for more information. ** Maximum of 8'0" for fixed windows with removable exterior glass stops.

	Woods
	Pine
	Mahogany
	Alder
	Douglas Fir
	Grilles
	Historical grilles (permanent interior and exterior)
	Removable interior grilles (wood)
	Grilles-between-the-glass (White interior, exterior finish matches     aluminum-cladding color)

	Clear Insulating Glass (IG)
	Low-E Insulating Glass with argon*
	Tinted and Reflective
	Laminated Glass
	Impact Resistant
	Spandrel glass or panels

	NFRC U-value Total Unit (48" x 48")			0.29 - 0.51	0.31 - 0.51
	Design Pressure* (psf)			20 - 90	30 - 90
	Structural Test Pressure (psf)			30 - 135	45 - 135
	Water Penetration			none @ 15 psf	none @ 15 psf
	Air Infiltration (@ 1.57 psf)			0.05 cfm	0.05 cfm
	* Performance class and grade rating and related hallmark certification apply to single units only with appropriate glass options and not the combined or composite units. Enhanced performance is available with Pella’s line of Advanced Performance products. Ask your local Pella architectural consultant for more information.

	Winter NFRC U-value			0.25 - 0.51	0.25 - 0.51
	Solar Heat Gain Coefficient			0.32 - 0.79	0.32 - 0.79
	Shading Coefficient			0.37 - 0.91	0.37 - 0.91
	% UV Transmission			7 - 62	7 - 62
	LBL Fading Damage***			0.18 - 0.64	0.18 - 0.64
	% Visible Light Transmission			40 - 83	40 - 83
	Performance numbers based on standard glass options.

	STC Rating			28 - 36	28 - 36
	OITC Rating			24 - 32	24 - 32

** Performance numbers based on standard glass options. *** Developed by Lawerence Berkeley Laboratories, the LBL damage function is a better predictor of fading damage than UV transmission. Lower values indicate less fading potential. (NOTE: This value does not consider visible light.)

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