Shelter-Rite® 8421 Architectural Fabric

Base Fabric Type

Standard: Polyester
Metric: Polyester

Base Fabric Weight (nominal)

Standard: 5.0 oz/yd2
Metric: 170 g/m2

Finished Coated Weight

ASTM D751

Standard: 21.0 oz/yd2 (+2/-1 oz/yd2)
Metric: 712 g/m2 (+70/-35 g/m2)

NOTE: Average weight of opaque fabrics will be ~ 4 oz/yd2 (140 g/m2) heavier

Trapezoid Tear

ASTM D4533

Standard: 50/60 lb
Metric: 23/267 N

Grab Tensile

ASTM D751

Standard: 375/350 lb
Metric: 1669/1558 N

Strip Tensile

ASTM D751 Procedure B

Standard: 350/325 lb/in
Metric: 307/285 daN/5 cm

Adhesion

ASTM D751 Dielectric Weld

Standard: 10 lb/in
Metric: 9 daN/5 cm

Hydrostatic Resistance

ASTM D751 Procedure A

Standard: 500 psi
Metric: 3.45 MPa

Dead Load Seam Strength

ASTM D751
2 in (50 mm) seam, 4 hr, 1 in (25 mm) strip

Standard: 106 lb @ 70 degrees F, 53 lb @ 160 degrees F

Metric: 472 N @ 21 degrees C, 233 N @ 71 degrees C

Low Temperature - LTC

ASTM D2136
1/8" mandrel, 4 hr

Standard: Pass @ -40 degrees F
Metric: Pass @ -40 degrees C

Flame Resistance

Meets NFPA 701; ASTM 6413 - 2 second flameout;
Registered by California Fire Marshal (No. F-10302);
ASTM E84 - flame spread index ≤25, smoke development rating ≤450

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