MV  Art, Drafting & Conservation Supplies, 1. 646. 217. 1177   

Chair Height Extension Kit.
	Quantity in Basket: None Code: A-CK55 Price: $32.75
	Quantity:
This convenient height extension kit easily convert Alvin’s office-height chairs into draftingheight models. Kit includes a strong cylindrical steel shaft with tapered end to lock into the chair base. Adds approximately 7½" to the height of the chair. Footring models can be adjusted vertically and then locked at the desired height. It is recommended that extension kit be attached when the chair is first assembled. Kit fits the following chair models: CH277, CH290, CH444, CH555, DC205 and DC207B. Only CK38 fits models CH112 and CH222.