Jamb Extensions & Interior Casing

Viwinco new construction - Elliptical above double-hung/double-hung/double-hung with extension jambs

Jamb extensions are a popular way of bringing additional character to your home’s design. On our new-construction S-Series and OceanView product lines we offer both factory applied extension jambs and interior colonial casing on our geometric products.

Factory Applied Jamb Extensions

  • Color-matched with window
  • Available in 4-5/8″ and 6-5/8″
  • We can also accommodate requests for jambs to be made smaller than 6-5/8″
Viwinco's factory-applies extension jambs

Interior Colonial Casing

  • Available in 2-1/4″ or 3-1/4″ on Geometric Windows
  • Only available in white finish, but it is paintable
  • Only available for New construction products, Viwinco S-Series & OceanView
Viwinco's bendable interior colonial casing and factory-applied extension jambs
Extension Jambs
S-SERIES
NEW CONSTRUCTION
AVAILABLE on hung, sliding, hinged,
fixed windows and patio doors
CAMBRIDGE
REPLACEMENT
NOT AVAILABLE
EDGEMONT
REPLACEMENT
NOT AVAILABLE
OCEANVIEW
IMPACT NEW CONSTRUCTION & REPLACEMENT
AVAILABLE on NEW CONSTRUCTION hung, sliding, hinged,
fixed windows and patio doors
PATIO DOORS
AVAILABLE
MULTITRACK 650 PATIO DOOR
NOT AVAILABLE