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	Casters/Glides
	Note: caster options can only be added to models containing the letter R in the part #/mfg. code
			BPG Oversized, 2" diameter plastic base glides

			CRC Dual-wheel polyurethane casters for hard floors (acceptable for clean room use)

			GFR Wide dual-wheel casters for grated clean room floors (not available in an ESD version)

			LKRO Conductive dual-wheel casters lock when the seat is occupied

			LKRU Conductive dual-wheel casters resist movement when the seat is not occupied

			LRO Dual-wheel soft casters lock when the seat is occupied

			LRU Dual-wheel soft casters resist movement when the seat is not occupied

			MLR Dual-wheel soft manual locking casters

			NGC Nylon glide covers for standard glides

			NSG Non-skid glides

			R Single-wheel, thermoplastic rubber, non-marring ball bearing casters for hard floors

			STR Dual-wheel non-marring conductive casters, appropriate for clean room use

			XR Dual-wheel carpet casters

	Footrings
			ATF Adjustable-height, 20" diameter cast aluminum footring; recommended for C, N, P bases with seat-height greater than 22"; not recommended for the T base

			G 18" diameter chrome-plated footring replaces powder-coated footring on T base or is permanently attached to C or P base. Not available on N base. Recommended for C and P bases in the 23"-27" range


	Seat Controls
			EXE – Executive Tilt Control – pneumatic seat-height adjustment, backrest-height adjustment, backrest tilt adjustment, seat and backrest swivel/tilt in unison, tilt tension control and single lever seat-tilt lock in any position. Not available on models with a maximum seat height of 26" or taller.

			FFAC – Free Float Articulating Control – pneumatic seat-height adjustment, backrest-height adjustment, seat and backrest tilt independently with separate levers and can free-float or lock into place

	Seats
			A (mfg. code first digit A) saddle-shaped, contoured seat with waterfall front, 21" wide x 19" deep x 3" thick

			MOC (mfg. code first digit M) ergonomic seat with waterfall front, 21" wide x 19" deep x 3" thick

			SHER (mfg. code first digit S) ergonomic seat with waterfall front, 21” wide x 17” deep x 3” thick; intended for use by individuals of shorter stature

	VU Upholstered underwrap in the same upholstery as the seat

			WS Round maple wood seat, 13" diameter x 1" thick for stools with steel seats

			Z Pullover seat cushion, 1 1/2" thick; recommended for use only on stools with steel seats

	Backrests
			EMB (mfg. code second digit M) Larger ergonomic backrest, 18" wide x 19" high, for both lower and upper back support; available on chairs with a seat height up to and including 26"

			ERN (mfg. code second digit A) narrow, 8" wide x 12" high, spinal support with lumbar curve

	Armrests
			ARS Height and width adjustable self-skinned urethane armrests; not available on C1 or C10 performance packages

			ARU Height and width adjustable upholstered pads armrests; not available on C1 or C10 performance packages

			PSAS Height-adjustable with self-skinned urethane padsarmrests; not available on C1 or C10 performance packages

			PSAU Height-adjustable with upholstered padsarmrests; not available on C1 or C10 performance packages



	Paint Finish Option
	SPF Special paint finishes are available. Please contact us for a selection of colors or help in matching an existing color. Fire Retardant Options (note: all BioFit upholstered chairs meet California Technical Bulletin 117 as standard) C-133 Special upholsteries, foam or barriers (as needed) to meet California Technical Bulleting 133 and Boston Fire Code. Upholstery choices may be limited. Contact us for details.

	Clean Room/ESD Options
	DBL Cleaning and assembly of clean room chair parts in our clean room including double bagging K-N10 Anti-static option for N10 chairs MO1 mega ohm resistor added to drag chain of ESD chairs. Not to be used with ESD casters SGL Cleaning and assembly of clean room chair parts in our clean room including single bagging

	Miscellaneous
	SW Skid wrapping TK Tamperproof (non-removable) backrest bar WM Weld-Mate upholstery option for welding operations