formed parts
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		BKTE 100 floor duct telescope insert, height = 100 mm
 
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		BKTE 110 floor duct telescope insert, height = 110 mm
 
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		BKB 100 floor duct bend, height = 100 mm
 
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		BKB 110 floor duct bend, height = 110 mm
 
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		BKBG 100 floor duct bend with mitre cut, height = 100 mm
 
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		BKBG 110 floor duct bend with mitre cut, height = 110 mm
 
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		BKBR 100 floor duct bend with radius, height = 100 mm
 
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		BKBR 110 floor duct bend with radius, height = 110 mm
 
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		BKVB 100 floor duct bend, variable, height = 100 mm
 
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		BKVB 110 floor duct bend, variable, height = 110 mm
 
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		BKB45 100 floor duct bend, height = 100 mm
 
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		BKB45 110 floor duct bend, height = 110 mm
 
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		BKK 100 floor duct crossing, height = 100 mm
 
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		BKK 110 floor duct crossing, height = 110 mm
 
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		BKA 100 floor duct branch, height = 100 mm
 
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		BKA 110 floor duct branch, height = 110 mm
 
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		BKAA 100 floor duct attachment branch, height = 100 mm
 
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		BKAA 110 floor duct attachment branch, height = 110 mm
 
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		BKVAA 100 floor duct attachment branch, variable, height = 100 mm
 
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		BKVAA 110 floor duct attachment branch, variable, height = 100 mm
 
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		BKGR 100 floor duct with mitre cut, right, height = 100 mm
 
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		BKGR 110 floor duct with mitre cut, right, height = 110 mm
 
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		BKGL 100 floor duct with mitre cut, left, height = 100 mm
 
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		BKGL 110 floor duct with mitre cut, left, height = 110 mm
 
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		BKS 100 Floor duct riser bend, height = 100 mm
 
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		BKS 110 floor duct riser bend, height = 110 mm
 
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		BKRKK 100 floor duct reducer, height = 95 mm
 
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		BKRKK 110 floor duct reducer, height = 105 mm
 
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		BKRKS 100 floor duct reducer, height = 95 mm
 
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		BKRKS 110 floor duct reducer, height = 105 mm