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Laboratories
PROGRAMS
CSA A440.2 Certification
Fire Certification Program
Certified Installers Program
Insulating Glass Certification Program
Manufactured Housing Certification Program
NFRC
Profiles Certification Program
Quality Assurance Program
Structural Certification Program
SUPPLIER DIRECTORY
John Evans Sons, Inc.-
1 Spring Avenue
Lansdale, Pennsylvania 19446
Phone:
215.368.7700
Product Type
Series 3/8″ Constant Force 5# (09/03)_x000D_ Series 1/2″ Constant Force 4#, 8#, 9# (09/03)_x000D_ Series 1/2″ Tilt Arm Constant Force 4#, 8#, 9# (09/03)_x000D_ Series 3/4″ Constant Force 5#, 10# (09/03)_x000D_ Series 3/4″ Tilt Arm Constant 5#, 10# (09/03)