Bow - Bay


Double Hung

Garden window

Hopper Replacement Window

Picture Window



TRI-MAX Slider

New Construction

SWS's most energy efficient window with triple glazing, boasting a .22 U-Value, .26 SHGC & DP 40 standard

SWS’s most energy efficient window with triple glazing, boasting a .21 U-Value, .23 SHGC & DP 15-30 standard

(a DuraGard XT product)

New Construction:   Awnings  Bays-Bows  Casements  Double Hung  Garden  Picture  Product Inquiry  Shapes   Slider


The Tri-Max triple pane glass window (a DuraGard XT product) is the top of the SWS line.

The basic window frame, sash, features and benefits are all the same as the DuraGard XT slider with the exception of the glass which is 1″ thick.
The window profile is only available one way:
3 panes of glass
2 argon filled airspaces
(low e-argon-clear glass-argon-low e)
This OFFSET AIRSPACE is a SWS Tri-Max window special feature which allows the Tri-Max window to achieve an energy efficient of .21 U-Value with or without grid.

Due to the double low e-glass these windows will have a darker tint that our normal window lines.


Exterior glazed sash
Super Spacer warm edge spacers
Fully welded sash keeps sash permanently square & true
Exclusive! Heavy Duty extruded aluminum screen (full or half screen)
1″ Insulated Glass decreases thermal energy loss
Fully welded beveled 3 1/4 frame


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.




Slider - New Construction Window
Slider – New Construction Window
Click IMAGE for HD version
Click IMAGE for HD version
Click IMAGE for HD version
Click IMAGE for HD version


About SWS

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.


TRI-MAX windows (A Duragard XT Product) are:

Made to Order
Made to Fit
Made to Last
Call (866) 416-3916
Measuring Window Openings
New Construction – Rough Opening CLICK IMAGE for printable pdf


TriMax Slider New Construction Interactive Window

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