Manufacturers of EPS - Expanded Polystyrene
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R12290 NORTHWEST FOAM PRODUCTS, INC.
1.0# Density UNDERWRITERS LABORATORIES INC.®
  CLASSIFIED: FOAMED PLASTIC
 
  Control No. 85TO
  SURFACE BURNING CHARACTERISTICS
  Type M-77 / M-87
 
  1 in. 2 in. 4 in. 5in.
  Max.+ Max.+ Max.+ Max.+
Flame Spread 5# 5## 5### 5###
Smoke Developed 55-90# 55-90## 55-90### 55-175###
 

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Installed in a thickness, or stored in an effective thickness, as indicated, for a density of 1.00 lb/ft³
 

#

Flame spread and smoke developed recorded while material remained in the original test position.  Ignition of molten residue on the furnace floor resulted in flame travel equivalent to calculated flame spread index of 10 and smoke developed index of 200.
 

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Flame spread and smoke developed recorded while material remained in the original test position.  Ignition of molten residue on the furnace floor resulted in flame travel equivalent to calculated flame spread index of 40 and smoke developed index of 450.
 

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Flame spread and smoke developed recorded while material remained in the original test position.  Ignition of molten residue on the furnace floor resulted in flame travel equivalent to calculated flame spread index of 80 and smoke developed index of 450 - over 500.
 

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Thickness: 1", 2", 4", 5"
 
 
 
R12290 NORTHWEST FOAM PRODUCTS, INC.
1.5# Density UNDERWRITERS LABORATORIES INC.®
  CLASSIFIED: FOAMED PLASTIC
 
  Control No. 85TO
  SURFACE BURNING CHARACTERISTICS
  Type M-77
 
  1 in. 3 in. 4 in. 5in.
  Max.+ Max.+ Max.+ Max.+
Flame Spread 5# 5## 5### 5####
Smoke Developed 20# 40-65## 40-65### 40-180####
 

+

Installed in a thickness, or stored in an effective thickness, as indicated, for a density of 1.50 lb/ft³
 

#

Flame spread and smoke developed recorded while material remained in the original test position.  Ignition of molten residue on the furnace floor resulted in flame travel equivalent to calculated flame spread index of 25 and smoke developed index of 450.
 

##

Flame spread and smoke developed recorded while material remained in the original test position.  Ignition of molten residue on the furnace floor resulted in flame travel equivalent to calculated flame spread index of 75 and smoke developed index of 450 - over 500.
 

###

Flame spread and smoke developed recorded while material remained in the original test position.  Ignition of molten residue on the furnace floor resulted in flame travel equivalent to calculated flame spread index of 90 and smoke developed index of over 500.
 

####

Flame spread and smoke developed recorded while material remained in the original test position.  Ignition of molten residue on the furnace floor resulted in flame travel equivalent to calculated flame spread index of 95 and smoke developed index of over 500.
 

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Thickness: 1", 3", 4", 5"
 
 
 
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