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		Pella Commercial double-hung and single-hung windows: Offer a virtually unlimited range of size options, including sizes up to 5' wide x 10' high Are built to order in 1/4" increments Performance up to DP 50* Feature many design options including a contemporary style that is popular in schools Are available with fixed glass companion units and transoms New for 2006! Architect Series® double-hung window with HurricaneShield® impact resistant glazing rated up to Missile D for Wind Zone 3. * 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.

	Operable Units (frame dimensions*)	1' 1 3/4" (349)	5' 0" (1524)	2' 3/8" (619)	10' 0" (3048)
	Nonoperable companion units (frame dimensions*)
	• Rectilinear (maximum of 50 square ft)	8" (203)	10' 0" (3048)	8" (203)	10' 0" (3048)
	• Curve Top	1' 2" (356)	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.

	Between-the-glass Slimshade® mini-blinds
	Between-the-glass cellular fabric shades
	Between-the-glass decorative panels
	Woods
	Pine
	Mahogany
	Alder
	Douglas Fir
	Grilles
	Historical grilles (permanent interior and exterior)
	Applied grilles (permanent interior and exterior)
	Removable between-the-glass (clad-matched exterior and     wood interior)
	Removable interior grilles (wood)
	Grilles-between-the-glass (White interior, exterior finish matches     aluminum-cladding color)
	Hardware
	Champagne, White, Bright Brass, Satin Nickel, Oil-Rubbed Bronze*
	Antique Brass, Chrome
	Rocky Mountain Hardware** (solid bronze)
	Screens1
	Flat (fiberglass)
	Vivid ViewTM (high transparancy fabric2)
	Rolscreen®
	* Oil-Rubbed Bronze is a living finish that will develop its own unique patina with use. ** Rocky Mountain Hardware is not available on all double-hung windows. See representative for availability. 1Warning: Use caution when children or pets are around open windows and doors. Screens are not designed to retain children or pets. 2Made with

	Clear Insulating Glass
	Argon-filled, Low-E Insulating Glass*
	Dual Glazing with Between-the-Glass Options
	Triple Glazing with Between-the-Glass Options
	Laminated Glass
	Impact Resistant Glass
	Tinted Glass
	Reflective Glass
	Spandrel glass or panels
	* High-altitude Low-E insulating glass does not contain argon gas.

	NFRC U-value Total Unit (47" x 49")	0.33 - 0.53	0.25 - 0.51	0.32 - 0.50	0.29 - 0.533
	Design Pressure* (psf)	30 - 50	30 - 50	30 - 50	20 - 90
	Structural Test Pressure (psf)	45 - 75	45 - 75	45 - 75	30 - 135
	Water Penetration	none @ 4.5 - 7.5 psf	none @ 4.5 - 7.5 psf	none @ 7.5 psf	none @ 15 psf
	Air Infiltration (@ 1.57 psf)	0.30 cfm	0.30 cfm	0.30 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. 3For 48" x 48" windows

	Winter NFRC U-value	0.25 - 0.51	0.16 - 0.50	0.25 - 0.51	0.25 - 0.51
	Solar Heat Gain Coefficient	0.32 - 0.79	0.26 - 0.79	0.41 - 0.79	0.32 - 0.79
	Shading Coefficient	0.37 - 0.91	0.31 - 0.91	0.47 - 0.91	0.37 - 0.91
	% UV Transmission	7 - 62	5 - 63	16 - 62	7 - 62
	LBL Fading Damage4	0.18 - 0.64	0.15 - 0.65	0.33 - 0.64	0.18 - 0.64
	% Visible Light Transmission	40 - 83	33 - 83	72 - 83	40 - 83
	4Developed by Lawrence 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.)

	STC Rating	27 - 35	30 - 33	27	28 - 36
	OITC Rating	23 - 31	23 - 27	22	24 - 32
	5Performance based on standard glass options.

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