T-38: Air Distribution

NameField (hours each)Field (hours per foot)
Grills and Registers Lay in
0-8 linear feet (perimeter)0.5
8-12 linear feet (perimeter)0.6
12 and up linear feet (perimeter)0.1
Grills and Registers Floor
0-4 linear feet (perimeter)0.5
4-6 linear feet (perimeter)0.6
6 and up linear feet (perimeter)0.1
Grills and Registers Rigid Hookup
0-6 linear feet (perimeter)0.8
6-9 linear feet (perimeter)0.9
9-12 linear feet (perimeter)1.3
12 and up linear feet (perimeter)0.1
Diffusers (Hard Ceiling)
"0-8"" diameter or 8 x 8"0.8
"9-12"" diameter or 12 x 12"0.9
"13-17"" diameter or 17 x 17"1.0
"18-24"" diameter or 24 x 24"1.2
"25-36"" diameter or 36 x 36"1.9
"37"" and up diameter"2.6
Diffusers (Lay-In Flex Hook Up)
"0-8"" diameter or 8 x 8"0.6
"9-12"" diameter or 12 x 12"0.7
"13-17"" diameter or 17 x 17"0.7
"18-24"" diameter or 24 x 24"0.9
"25"" and up diameter"1.3
Diffusers (Lay-In Ceiling Rigid)
"0-8"" diameter or 8 x 8"0.9
"9-12"" diameter or 12 x 12"1.0
"13-17"" diameter or 17 x 17"1.2
"18-24"" diameter 24 x 24"1.3
"25"" and up diameter"1.8
Linear Diffusers
1 Slot0.3
2 Slots0.3
3 Slots0.3
4 and up Slots0.4
Slot Diffusers
2 and 3 Foot0.7
4 and 5 Foot0.9
Air Troffer
Single Troffer0.7
Double Troffer0.9
Air Extractor
Air Extractor0.4


Base - Unadjusted

T-38: Air Distribution

Grills and Registers Lay in
0-8 linear feet (perimeter)0.5
8-12 linear feet (perimeter)0.6
12 and up linear feet (perimeter)0.1
Grills and Registers Floor
0-4 linear feet (perimeter)0.5
4-6 linear feet (perimeter)0.6
6 and up linear feet (perimeter)0.1
Grills and Registers Rigid Hookup
0-6 linear feet (perimeter)0.8
6-9 linear feet (perimeter)0.9
9-12 linear feet (perimeter)1.3
12 and up linear feet (perimeter)0.1
Diffusers (Hard Ceiling)
"0-8"" diameter or 8 x 8"0.8
"9-12"" diameter or 12 x 12"0.9
"13-17"" diameter or 17 x 17"1.0
"18-24"" diameter or 24 x 24"1.2
"25-36"" diameter or 36 x 36"1.9
"37"" and up diameter"2.6
Diffusers (Lay-In Flex Hook Up)
"0-8"" diameter or 8 x 8"0.6
"9-12"" diameter or 12 x 12"0.7
"13-17"" diameter or 17 x 17"0.7
"18-24"" diameter or 24 x 24"0.9
"25"" and up diameter"1.3
Diffusers (Lay-In Ceiling Rigid)
"0-8"" diameter or 8 x 8"0.9
"9-12"" diameter or 12 x 12"1.0
"13-17"" diameter or 17 x 17"1.2
"18-24"" diameter 24 x 24"1.3
"25"" and up diameter"1.8
Linear Diffusers
1 Slot0.3
2 Slots0.3
3 Slots0.3
4 and up Slots0.4
Slot Diffusers
2 and 3 Foot0.7
4 and 5 Foot0.9
Air Troffer
Single Troffer0.7
Double Troffer0.9
Air Extractor
Air Extractor0.4