RED

Formula Number

BLUE

Brief Description

BLACK

Description

10

DW

DUCTWORK

60

OFF

OFFSET

11

SBR

SLIDING BRANCH

61

OFF

OFFSET (ASYMM)

12

SBR

SLIDING BRANCH

62

OFF

OFFSET (ROUNDED)

13

COL

COLLAR

70

TS

TEE SYM.

15

DU

DUCT

71

TAS

TEE ASYM.

16

RINS

RND-INSULATION

72

X

X-PIECE

17

FINS

FLEX-INSULATION

73

TAS2R

TEE ASYM.

18

DWB

DUCTWORK W. BRANCH

74

X

X-PIECE

19

DUB

DUCT W. BRANCH

75

TR90

TEE-RND90

20

ELS

ELBOW SYM.

76

TR<90

TEE-RND <90

21

ELAS

ELBOW ASYM.

77

TR90C

TEE-RND90/CONICAL

22

KN

KNEE

78

TR<90

TEE-RND <90/CONICAL

23

KN

KNEE

79

TRSC

TEE-RND SYM/KONISCH

25

ELRD

ELBOW RND

80

FX

FLEX: DUCT

26

SEL

SEGMENT ELBOW

81

FX

FLEX: DUCT

27

ELA

ELBOW ANGLED

85

FAVL

FLEX. CONNECT VL

30

TRS

TRANS. RND. SYM.

86

FARL

FLEX. CONNECT RL

31

TRAS

TRANS. RND. ASYM.

90

TRR

TEE-RND/REDUCED

40

TRS

TRANSITION SYM.

91

TR45R

TEE-RND 45/REDUCED

41

TRAS

TRANSITION ASYM.

92

IS

X-PIECE SYM

42

YS

WYE

95

YS

Y-DUCT SYM

43

TRAS

TRANSITION ASYM.

44

TRB

TRANSITION BRANCH

50

TRRRD

TRANSITION RECT/RND

51

TRRRDAS

TRANSITION RECT/RND AS