How is the throat size determined for a hollow metal frame?

By |2021-08-25T00:11:54+00:00August 25th, 2021||

The throat size is determined by the wall thickness. Common wall compositions and their throat size: 2-1/2” metal stud, 1 layer of 5/8” sheetrock both sides: 3-3/4” 3-5/8” metal stud, 1 layer of 5/8” sheetrock both sides: 4-7/8” 3-5/8” metal stud, 2 layers of 5/8” sheetrock both sides: 6-1/8” 6” metal stud, 1 layer of

What are the fire door rating classifications and what do they mean?

By |2021-08-25T00:10:51+00:00August 25th, 2021||

Class A (3 hour) – openings in firewalls that divide a single building into fire areas. Class B (1-1/2 hour) – openings in enclosures of vertical shafts and stairwells through buildings and in 2-hour rated partitions providing horizontal fire separations. Class C (3/4 hour) – openings in walls or partitions between rooms and corridors having

What is the difference between rotary sliced and plain sliced veneer? What is quarter cut?

By |2021-08-25T00:05:12+00:00August 25th, 2021||

Rotary sliced or rotary cut follows a log’s annual growth rings, providing a bold, random appearance. Plain sliced or flat cut is sliced parallel to the center of a log, creating a cathedral or straight grain pattern, which is ideally suited for matching doors and wall patterns. Quarter cutting produces a series of straight grained

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