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Replacement Window


Fully welded sash and frame with an extra high sill dam.  .29 U-Value, .29 SHGC, & DP 40 standard
Fully welded sash and frame with an extra high sill dam. .29 U-Value, .29 SHGC, & DP 40 standard

Replacement Windows:  Awnings  Casements  Double Hung  Picture  Product Inquiry  Shapes  Slider


DSC00629Specialty window shapes and garden windows are very popular in many homes today. They add a level of distinction that’s unique as the home they are destined for. All SWS’s shape and Garden windows are manufactured by Ventana PA to meet the strict energy star guidelines and to provide the longevity you would expect from any SWS product.

SWS’s DuraGard XT family of windows has been engineered to exceed today’s tough energy standards as well as being designed for aesthetic appeal.  SWS manufactures the DuraGard family to the highest quality to give the consumer years of worry-free use.   All of the DuraGard products are constructed using the finest materials on the market today.

All of our DuraGard products with low E/agron glass exceed Energy Star requirements.   The DuraGard XT family is available in eight new construction or replacement styles.   The DuraGard Xt double hung, manufactured by SWS, has one of the best U-Value ratings in the window market.  Our U-Value for low E, argon gas filled 7/8″ overall airspace is .28.   While that alone is reason enough.  SWS didn’t stop there!  The DuraGard XT line of windows is constructed of the best of the best components for an extreme value-added finished product.     Call today  (866) 416-3916 or use this form

DuraGard windows ae made to order, made to fit, and made to last.


DuraGard Features

shapeorange100% Virgin White vinyl color throughout

Therma-Core Reinforced Sash for added stability

Fully Welded Sash – Keeps sash permanently square and true

7/8″  Insulated Glass Decreases thermal energy loss

Closed Cell foam-filled bulb seal on lower sash reduces air and water infiltraitons

Slopped Sill Allows for proper drainage on outside of window

Fully Tilting Sash with Recessed Tilt Latches

Inverted Constant Force

Deluxe Low Profile Sash Vent Stops

Fully Welded Beveled 3 1/4″ Frame

Super Spacer warm edge spacers to help reduce condensation (pdf info)

Extended Reach “Cam Action” Sash Lock –  pulls sash together for maximum tightness ensuring increased security and less air infiltration

Exterior Glazed Sash – weather sealed with udometer glazing stop to prvent water infiltration

Exclusive! – Heavy Duty Extruded Aluminum Screen (Full Screen or Half Screen)

Dual Wall Integrated Lift Rails

Dual Wall Interior Dam Leg

Interlocking Sash Meeting Rails

Therma Core Reinforced Meeting Rails

Quiet Triple Fin Pile Weather Stripping



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Condensation Resistance DuraGard XT
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About SWS

Specialty Wholesale Supply (SWSS) is the Maki Corp MANUFACTURING DIVISION. SWS is a leading manufacturer of quality vinyl windowsexterior doors, interior doors,  patio doors,custom millwork at the Mill Shop, metal fabrication, screen enclosures, countertops, vinyl railing, vinyl fencing, and trusses.

SWS was founded in 1969. Products can be purchased through MAKI Building Centers in Lunenburg, Gardner, Sterling or directly through the SWS manufacturing complex featuring several manufacturing plants and centrally located in Gardner, Massachusetts.  As a family-owned business, we strive to make your shopping experience unique, informative, and personal.  SWS caters not only to architects, builders, and contractors, but also homeowners in Central New England.

The SWS staff enjoys working with you on your project whether your needs are large or small.     Contact us for more information.     Quote Request.


DuraGard Windows are made to order, made to fit, and made to last.

Call today  (866) 416-3916


Measuring Window Openings

Tip -To – Tip

When given a TTT measurement SWS will use the exact width and height dimension furnished, no deductions.   You window will be made that exact size.  Please measure carefully as customer-furnished measurements are the customer’s responsibility.

Measuring by the opening size

Pertains to an existing window frame where sash has been removed but the window frame has been left in place to house the new unit.  SWS when given an opening size dimension we will deduct 1/4″ off  the width and 1/2 ” off the height of dimension to allow room to square up the opening after installation.

Determine united inch

To determine united inch, add the height and the width.  If you have any questions, please do not hesitate to call SWS for answers.    Download replacement window measuring sheet.


DuraGard XT Replacement Interactive Window – Shape

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