08-OPENINGS

Question 1

STANDARD VS CUSTOM FORMED DOORS

Answer 1

STANDARD, are mass-produced and sold to retail outlets such as lumber yards and home centers.

CUSTOM, manufactured specially for a particular project to suit an owner’s or architect’s design.

Question 2

WEATHER STRIPPING

Answer 2

controls air infiltration and prevents rain penetration, minimizes dust infiltration, and withstands atmospheric conditions.

Question 3

SDI (Steel Door Institute)

4 Levels of Door Classification

Answer 3

1 / Standard Duty
2 / Heavy Duty – 1-3/4” thick
3 / Extra Heavy Duty – 1-3/4” thick
4 / Maximum Duty – main entrances and gymnasiums, dormitories, 1-3/4” thick

Question 4

DOOR DESIGN NOMENCLATURE

Answer 4

F / Flush
G / Half Glass
NL / Narrow Light
V / Vision Light
L / Bottom Louver
D / Dutch Door
FG / Full Glass
FL / Full Louver

Question 5

DOOR FRAME TYPES

Answer 5

WELDED / corners and intersections fully welded
KNOCKDOWN / mechanical joints delivered disassembled
DRYWALL / designed for drywall partitions
STOREFRONT / welded frames shipped in several pieces assembled in the field
LEAD-LINED / used in x-ray room or where radiation is a hazard