Amazon.com: Premier 12" - 18" Adjustable Pro Roller Frame for Large Surfaces, 1900 : Tools & Home Improvement
ROLLINGDOG 18 Inch Paint Roller Frame - Adjustable from 12" to 18" for Large Area, Ceiling, Floor, Wall Painting, Can be Attached to Threaded End Extension Poles - Amazon.com
Purdy Revolution 18-in Plastic Standard Paint Roller Frame in the Paint Roller Frames department at Lowes.com
PinStone House Paint Roller Kit, 9 inch Extendable Roller Frame with 5 Microfiber Replacement Covers, Adjustable Painting Roller (18" - 36"), Home Painting Supplies for Painting Walls and Ceilings - Amazon.com
Project Select 12-18 in. W Adjustable Paint Roller Frame Threaded End - Ace Hardware
Purdy Revolution 18-in Plastic Standard Paint Roller Frame in the Paint Roller Frames department at Lowes.com
Paint Roller Frame, 18 Inch Adjustable with End Caps