The charming gatekeepers that create the best first impressions!

COSTAA “Flush Doors” is designed and manufactured with Gurjan Hardwood Core and Kiln Dried Chemically treated New Zealand Pine Lumbers with high quality Phenol Formaldehyde resin.

The Specifics

  • High screw holding capacity
  • Superior slamming absorption and enhanced flatness
  • Least deflection in flexure and edge loading
  • Borer and termite free

Perfect Fit

  • Room doors, Main doors, Kitchen doors, Washroom doors
  • Office doors, Conference room doors
  • Hospital room doors
  • School classroom doors

Technical Specifications

Sl. No.

Name of Test

Parameters

1.
Moisture Content (%)
10 – 12
2.
Flatness of Shutter (Twist, Cupping & Warping)
Not more than 1mm
3.
Local Planes (surface smoothness)
Not more than 0.5mm
4.
Impact Indentation
Not more than 0.2mm by a weight of 0.5kg
5.
Flexure Resistance (residual Deflection)
Not more than 0.2mm .
6.
Edge Loading
a)
Residual Deflection
Not more than 0.2mm
b)
Lateral buckling
Not more than 1.5mm
c)
Shock Resistance
No visible damage after 25 blows of 5 kg
7.
Buckling Resistance
a)
Initial Deflection
Not more than 40mm
b)
Residual Deflection
Not more than 5mm
8.
Slamming of the Shutter
No visible impact after 25 impacts of 15 kg
9.
Misuse of the Shutter
No permanent deformation after the test
10.
Varying Humidity (adverse weather condition)
Dimensional changes within 5%
11.
End Immersion
No delamination after immersion
12.
Adhesion of plies
Excellent
13.
Glue Adhesion
No delamination of the glue line
14.
Screw Holding Strength (kg)
>125
15.
Preservative Treatment (Two stage treatment)
a)
Lumber and veneers
As per BIS guidelines
b)
Glue line
Anti Borer treatment
16.
Specific gravity
0.60
17.
Water Absorption
<1%
18.
Nail Holding Strength (kg)
>50
gurjan3
5-2
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