Standard Features
 
  Models:
  • Freestanding
  • 24’ and 28’ widths
  • Lengths available in 10’ or
    12’ sections
 
  Frame:
  • Extruded aluminum frame
  • Mill finish
  • 6 on 12 roof pitch
  • Steel fasteners at all
     connections
  • Rigid frame or truss frame

  Glazing:
  • 8mm clear double
     wall polycarbonate
  • 16mm clear triplewall
     polycarbonate
  • Bar caps are equipped with
     E.P.D.M. weather stripping

  Door: 
  • Models available with single
     or double Pella storm doors
  • 1 5/8” heavy duty frame
     with rigid foam insulation
  • Brass handle
  • Keyed deadbolt for security

  Ventilation:
 • 1 continuous row of
    thermostatically controlled
    roof vents
 • Door features sliding
    screened window

  Foundation:
  • Foundation below frost line
     strongly recommended
  • Foundation should not be
     installed until plans are
     received from National to
     assure proper dimensions
     are maintained

  Engineering:
  • Each model is designed
     and engineered to meet
     local building code.

   Custom Features

  Models:
  • Custom lengths and widths
     available
  • Glazed to customer provided
     kneewall
  • Freestanding with gable end     attached

  Frame:
 • Painted frame
 • 4 ½ on 12 roof pitch

  Glazing:
 • Bronze or opal polycarbonate
 • 1/8” clear or bronze tinted
    tempered glass
 • 1/4” tempered glass
 • Laminated glass
 • Glass system - lapped glass

  Doors:
 • Commercial quality custom
    made single or double doors

  Ventilation:
 • 2nd row roof vents automatic
    or manual
 • Side wall vents automatic
    or manual